diff --git a/CHANGELOG.org b/CHANGELOG.org
index a6a5f3b..aeeeb76 100644
--- a/CHANGELOG.org
+++ b/CHANGELOG.org
@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [[https://keepachangelog.com/en/1.0.0/][Keep a Changelog]], and this project adheres to
 [[https://semver.org/spec/v2.0.0.html][Semantic Versioning]].
 
+* [0.6.0] - 2019-??-??
+
+** Added
+
+   - Abstraction layer encapsulating S3 as Storage (#76)
+
 * [0.5.0] - 2019-06-21
 
 ** Added
diff --git a/aws-api/src/main/scala/net/kemitix/thorp/aws/api/S3Action.scala b/aws-api/src/main/scala/net/kemitix/thorp/aws/api/S3Action.scala
deleted file mode 100644
index d502fb6..0000000
--- a/aws-api/src/main/scala/net/kemitix/thorp/aws/api/S3Action.scala
+++ /dev/null
@@ -1,40 +0,0 @@
-package net.kemitix.thorp.aws.api
-
-import net.kemitix.thorp.domain.{MD5Hash, RemoteKey}
-
-sealed trait S3Action {
-
-  // the remote key that was uploaded, deleted or otherwise updated by the action
-  def remoteKey: RemoteKey
-
-  val order: Int
-
-}
-
-object S3Action {
-
-  final case class DoNothingS3Action(remoteKey: RemoteKey) extends S3Action {
-    override val order: Int = 0
-  }
-
-  final case class CopyS3Action(remoteKey: RemoteKey) extends S3Action {
-    override val order: Int = 1
-  }
-
-  final case class UploadS3Action(
-                                   remoteKey: RemoteKey,
-                                   md5Hash: MD5Hash) extends S3Action {
-    override val order: Int = 2
-  }
-
-  final case class DeleteS3Action(remoteKey: RemoteKey) extends S3Action {
-    override val order: Int = 3
-  }
-
-  final case class ErroredS3Action(remoteKey: RemoteKey, e: Throwable) extends S3Action {
-    override val order: Int = 10
-  }
-
-  implicit def ord[A <: S3Action]: Ordering[A] = Ordering.by(_.order)
-
-}
diff --git a/aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/S3ClientBuilder.scala b/aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/S3ClientBuilder.scala
deleted file mode 100644
index 077776a..0000000
--- a/aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/S3ClientBuilder.scala
+++ /dev/null
@@ -1,16 +0,0 @@
-package net.kemitix.thorp.aws.lib
-
-import com.amazonaws.services.s3.transfer.{TransferManager, TransferManagerBuilder}
-import com.amazonaws.services.s3.{AmazonS3, AmazonS3ClientBuilder}
-import net.kemitix.thorp.aws.api.S3Client
-
-object S3ClientBuilder {
-
-  def createClient(amazonS3Client: AmazonS3,
-                   amazonS3TransferManager: TransferManager): S3Client =
-    new ThorpS3Client(amazonS3Client, amazonS3TransferManager)
-
-  def defaultClient: S3Client =
-    createClient(AmazonS3ClientBuilder.defaultClient, TransferManagerBuilder.defaultTransferManager)
-
-}
diff --git a/build.sbt b/build.sbt
index 86102ff..4505875 100644
--- a/build.sbt
+++ b/build.sbt
@@ -41,16 +41,16 @@ val catsEffectsSettings = Seq(
     "-Ypartial-unification")
 )
 
-// cli -> thorp-lib -> aws-lib -> core -> aws-api -> domain
+// cli -> thorp-lib -> storage-aws -> core -> storage-api -> domain
 
-lazy val root = (project in file("."))
+lazy val thorp = (project in file("."))
   .settings(commonSettings)
 
 lazy val cli = (project in file("cli"))
   .settings(commonSettings)
   .settings(mainClass in assembly := Some("net.kemitix.thorp.cli.Main"))
   .settings(applicationSettings)
-  .aggregate(`thorp-lib`, `aws-lib`, core, `aws-api`, domain)
+  .aggregate(`thorp-lib`, `storage-aws`, core, `storage-api`, domain)
   .settings(commandLineParsing)
   .settings(testDependencies)
   .dependsOn(`thorp-lib`)
@@ -58,11 +58,11 @@ lazy val cli = (project in file("cli"))
 lazy val `thorp-lib` = (project in file("thorp-lib"))
   .settings(commonSettings)
   .settings(assemblyJarName in assembly := "thorp-lib.jar")
-  .dependsOn(`aws-lib`)
+  .dependsOn(`storage-aws`)
 
-lazy val `aws-lib` = (project in file("aws-lib"))
+lazy val `storage-aws` = (project in file("storage-aws"))
   .settings(commonSettings)
-  .settings(assemblyJarName in assembly := "aws-lib.jar")
+  .settings(assemblyJarName in assembly := "storage-aws.jar")
   .settings(awsSdkDependencies)
   .settings(testDependencies)
   .dependsOn(core)
@@ -71,11 +71,11 @@ lazy val core = (project in file("core"))
   .settings(commonSettings)
   .settings(assemblyJarName in assembly := "core.jar")
   .settings(testDependencies)
-  .dependsOn(`aws-api`)
+  .dependsOn(`storage-api`)
 
-lazy val `aws-api` = (project in file("aws-api"))
+lazy val `storage-api` = (project in file("storage-api"))
   .settings(commonSettings)
-  .settings(assemblyJarName in assembly := "aws-api.jar")
+  .settings(assemblyJarName in assembly := "storage-api.jar")
   .dependsOn(domain)
 
 lazy val domain = (project in file("domain"))
diff --git a/cli/src/main/scala/net/kemitix/thorp/cli/Program.scala b/cli/src/main/scala/net/kemitix/thorp/cli/Program.scala
index 22d6843..c286c24 100644
--- a/cli/src/main/scala/net/kemitix/thorp/cli/Program.scala
+++ b/cli/src/main/scala/net/kemitix/thorp/cli/Program.scala
@@ -1,15 +1,15 @@
 package net.kemitix.thorp.cli
 
 import cats.effect.{ExitCode, IO}
-import net.kemitix.thorp.aws.lib.S3ClientBuilder
 import net.kemitix.thorp.core.{ConfigOption, Sync}
 import net.kemitix.thorp.domain.Logger
+import net.kemitix.thorp.storage.aws.S3StorageServiceBuilder.defaultStorageService
 
 trait Program {
 
   def apply(configOptions: Seq[ConfigOption]): IO[ExitCode] = {
     implicit val logger: Logger = new PrintLogger()
-    Sync(S3ClientBuilder.defaultClient)(configOptions) flatMap {
+    Sync(defaultStorageService)(configOptions) flatMap {
       case Left(errors) =>
         for {
           _ <- logger.error(s"There were errors:")
diff --git a/core/src/main/scala/net/kemitix/thorp/core/ActionSubmitter.scala b/core/src/main/scala/net/kemitix/thorp/core/ActionSubmitter.scala
index f164784..9f56200 100644
--- a/core/src/main/scala/net/kemitix/thorp/core/ActionSubmitter.scala
+++ b/core/src/main/scala/net/kemitix/thorp/core/ActionSubmitter.scala
@@ -1,37 +1,39 @@
 package net.kemitix.thorp.core
 
 import cats.effect.IO
-import net.kemitix.thorp.aws.api.S3Action.DoNothingS3Action
-import net.kemitix.thorp.aws.api.{S3Action, S3Client, UploadProgressListener}
 import net.kemitix.thorp.core.Action.{DoNothing, ToCopy, ToDelete, ToUpload}
-import net.kemitix.thorp.domain.{Config, Logger}
+import net.kemitix.thorp.domain.{Config, Logger, StorageQueueEvent, UploadEventListener}
+import net.kemitix.thorp.domain.StorageQueueEvent.DoNothingQueueEvent
+import net.kemitix.thorp.storage.api.StorageService
 
-object ActionSubmitter {
+trait ActionSubmitter {
 
-  def submitAction(s3Client: S3Client,
+  def submitAction(storageService: StorageService,
                    action: Action)
                   (implicit c: Config,
-                   logger: Logger): Stream[IO[S3Action]] = {
+                   logger: Logger): Stream[IO[StorageQueueEvent]] = {
     Stream(
       action match {
         case ToUpload(bucket, localFile) =>
           for {
             _ <- logger.info(s"    Upload: ${localFile.relative}")
-            progressListener = new UploadProgressListener(localFile)
-            action <- s3Client.upload(localFile, bucket, progressListener, 1)
-          } yield action
+            uploadEventListener = new UploadEventListener(localFile)
+            event <- storageService.upload(localFile, bucket, uploadEventListener, 1)
+          } yield event
         case ToCopy(bucket, sourceKey, hash, targetKey) =>
           for {
             _ <- logger.info(s"      Copy: ${sourceKey.key} => ${targetKey.key}")
-            action <- s3Client.copy(bucket, sourceKey, hash, targetKey)
-          } yield action
+            event <- storageService.copy(bucket, sourceKey, hash, targetKey)
+          } yield event
         case ToDelete(bucket, remoteKey) =>
           for {
             _ <- logger.info(s"    Delete: ${remoteKey.key}")
-            action <- s3Client.delete(bucket, remoteKey)
-          } yield action
-        case DoNothing(bucket, remoteKey) =>
-          IO.pure(DoNothingS3Action(remoteKey))
+            event <- storageService.delete(bucket, remoteKey)
+          } yield event
+        case DoNothing(_, remoteKey) =>
+          IO.pure(DoNothingQueueEvent(remoteKey))
       })
   }
 }
+
+object ActionSubmitter extends ActionSubmitter
diff --git a/core/src/main/scala/net/kemitix/thorp/core/ParseConfigLines.scala b/core/src/main/scala/net/kemitix/thorp/core/ParseConfigLines.scala
index 7e273bb..5c9cc36 100644
--- a/core/src/main/scala/net/kemitix/thorp/core/ParseConfigLines.scala
+++ b/core/src/main/scala/net/kemitix/thorp/core/ParseConfigLines.scala
@@ -3,7 +3,7 @@ package net.kemitix.thorp.core
 import java.nio.file.Paths
 import java.util.regex.Pattern
 
-import net.kemitix.thorp.core.ConfigOption.{Bucket, Debug, Exclude, Include, Prefix, Source}
+import net.kemitix.thorp.core.ConfigOption._
 
 trait ParseConfigLines {
 
diff --git a/core/src/main/scala/net/kemitix/thorp/core/Sync.scala b/core/src/main/scala/net/kemitix/thorp/core/Sync.scala
index febef7d..c4edfa7 100644
--- a/core/src/main/scala/net/kemitix/thorp/core/Sync.scala
+++ b/core/src/main/scala/net/kemitix/thorp/core/Sync.scala
@@ -2,7 +2,6 @@ package net.kemitix.thorp.core
 
 import cats.effect.IO
 import cats.implicits._
-import net.kemitix.thorp.aws.api.{S3Action, S3Client}
 import net.kemitix.thorp.core.Action.ToDelete
 import net.kemitix.thorp.core.ActionGenerator.createActions
 import net.kemitix.thorp.core.ActionSubmitter.submitAction
@@ -11,6 +10,7 @@ import net.kemitix.thorp.core.LocalFileStream.findFiles
 import net.kemitix.thorp.core.S3MetaDataEnricher.getMetadata
 import net.kemitix.thorp.core.SyncLogging.{logFileScan, logRunFinished, logRunStart}
 import net.kemitix.thorp.domain._
+import net.kemitix.thorp.storage.api.StorageService
 
 trait Sync {
 
@@ -20,24 +20,24 @@ trait Sync {
     } yield errorMessages
   }
 
-  def apply(s3Client: S3Client)
+  def apply(storageService: StorageService)
            (configOptions: Seq[ConfigOption])
            (implicit defaultLogger: Logger): IO[Either[List[String], Unit]] =
     buildConfig(configOptions).flatMap {
-      case Right(config) => runWithValidConfig(s3Client, defaultLogger, config)
+      case Right(config) => runWithValidConfig(storageService, defaultLogger, config)
       case Left(errors) => IO.pure(Left(errorMessages(errors.toList)))
     }
 
-  private def runWithValidConfig(s3Client: S3Client,
+  private def runWithValidConfig(storageService: StorageService,
                                  defaultLogger: Logger,
                                  config: Config) = {
     for {
-      _ <- run(config, s3Client, defaultLogger.withDebug(config.debug))
+      _ <- run(config, storageService, defaultLogger.withDebug(config.debug))
     } yield Right(())
   }
 
   private def run(cliConfig: Config,
-                  s3Client: S3Client,
+                  storageService: StorageService,
                   logger: Logger): IO[Unit] = {
 
     implicit val c: Config = cliConfig
@@ -50,9 +50,9 @@ trait Sync {
       IO.pure(sData.flatMap(s3MetaData => createActions(s3MetaData)))
 
     def submit(sActions: Stream[Action]) =
-      IO(sActions.flatMap(action => submitAction(s3Client, action)))
+      IO(sActions.flatMap(action => submitAction(storageService, action)))
 
-    def copyUploadActions(s3Data: S3ObjectsData): IO[Stream[S3Action]] =
+    def copyUploadActions(s3Data: S3ObjectsData): IO[Stream[StorageQueueEvent]] =
       (for {
         files <- findFiles(c.source, MD5HashGenerator.md5File(_))
         metaData <- metaData(s3Data, files)
@@ -62,18 +62,18 @@ trait Sync {
         .flatten
         .map(streamS3Actions => streamS3Actions.sorted)
 
-    def deleteActions(s3ObjectsData: S3ObjectsData): IO[Stream[S3Action]] =
+    def deleteActions(s3ObjectsData: S3ObjectsData): IO[Stream[StorageQueueEvent]] =
       (for {
         key <- s3ObjectsData.byKey.keys
         if key.isMissingLocally(c.source, c.prefix)
-        ioDelAction <- submitAction(s3Client, ToDelete(c.bucket, key))
+        ioDelAction <- submitAction(storageService, ToDelete(c.bucket, key))
       } yield ioDelAction)
         .toStream
         .sequence
 
     for {
       _ <- logRunStart
-      s3data <- s3Client.listObjects(c.bucket, c.prefix)
+      s3data <- storageService.listObjects(c.bucket, c.prefix)
       _ <- logFileScan
       copyUploadActions <- copyUploadActions(s3data)
       deleteActions <- deleteActions(s3data)
diff --git a/core/src/main/scala/net/kemitix/thorp/core/SyncLogging.scala b/core/src/main/scala/net/kemitix/thorp/core/SyncLogging.scala
index 94ee11c..2096cbe 100644
--- a/core/src/main/scala/net/kemitix/thorp/core/SyncLogging.scala
+++ b/core/src/main/scala/net/kemitix/thorp/core/SyncLogging.scala
@@ -2,12 +2,11 @@ package net.kemitix.thorp.core
 
 import cats.effect.IO
 import cats.implicits._
-import net.kemitix.thorp.aws.api.S3Action
-import net.kemitix.thorp.aws.api.S3Action.{CopyS3Action, DeleteS3Action, ErroredS3Action, UploadS3Action}
-import net.kemitix.thorp.domain.{Config, Logger}
+import net.kemitix.thorp.domain.{Config, Logger, StorageQueueEvent}
+import net.kemitix.thorp.domain.StorageQueueEvent.{CopyQueueEvent, DeleteQueueEvent, ErrorQueueEvent, UploadQueueEvent}
 
 // Logging for the Sync class
-object SyncLogging {
+trait SyncLogging {
 
   def logRunStart(implicit c: Config,
                   logger: Logger): IO[Unit] =
@@ -17,16 +16,16 @@ object SyncLogging {
                   logger: Logger): IO[Unit] =
     logger.info(s"Scanning local files: ${c.source}...")
 
-  def logErrors(actions: Stream[S3Action])
+  def logErrors(actions: Stream[StorageQueueEvent])
                (implicit logger: Logger): IO[Unit] =
     for {
       _ <- actions.map {
-        case ErroredS3Action(k, e) => logger.warn(s"${k.key}: ${e.getMessage}")
+        case ErrorQueueEvent(k, e) => logger.warn(s"${k.key}: ${e.getMessage}")
         case _ => IO.unit
       }.sequence
     } yield ()
 
-  def logRunFinished(actions: Stream[S3Action])
+  def logRunFinished(actions: Stream[StorageQueueEvent])
                     (implicit c: Config,
                      logger: Logger): IO[Unit] = {
     val counters = actions.foldLeft(Counters())(countActivities)
@@ -40,19 +39,21 @@ object SyncLogging {
   }
 
   private def countActivities(implicit c: Config,
-                              logger: Logger): (Counters, S3Action) => Counters =
-    (counters: Counters, s3Action: S3Action) => {
+                              logger: Logger): (Counters, StorageQueueEvent) => Counters =
+    (counters: Counters, s3Action: StorageQueueEvent) => {
       s3Action match {
-        case _: UploadS3Action =>
+        case _: UploadQueueEvent =>
           counters.copy(uploaded = counters.uploaded + 1)
-        case _: CopyS3Action =>
+        case _: CopyQueueEvent =>
           counters.copy(copied = counters.copied + 1)
-        case _: DeleteS3Action =>
+        case _: DeleteQueueEvent =>
           counters.copy(deleted = counters.deleted + 1)
-        case ErroredS3Action(k, e) =>
+        case ErrorQueueEvent(k, e) =>
             counters.copy(errors = counters.errors + 1)
         case _ => counters
       }
     }
 
 }
+
+object SyncLogging extends SyncLogging
diff --git a/core/src/test/scala/net/kemitix/thorp/core/S3ActionSuite.scala b/core/src/test/scala/net/kemitix/thorp/core/StorageQueueEventSuite.scala
similarity index 61%
rename from core/src/test/scala/net/kemitix/thorp/core/S3ActionSuite.scala
rename to core/src/test/scala/net/kemitix/thorp/core/StorageQueueEventSuite.scala
index 36834a7..b43d2c9 100644
--- a/core/src/test/scala/net/kemitix/thorp/core/S3ActionSuite.scala
+++ b/core/src/test/scala/net/kemitix/thorp/core/StorageQueueEventSuite.scala
@@ -1,17 +1,17 @@
 package net.kemitix.thorp.core
 
-import net.kemitix.thorp.aws.api.S3Action.{CopyS3Action, DeleteS3Action, UploadS3Action}
 import net.kemitix.thorp.domain.{MD5Hash, RemoteKey}
+import net.kemitix.thorp.domain.StorageQueueEvent.{CopyQueueEvent, DeleteQueueEvent, UploadQueueEvent}
 import org.scalatest.FunSpec
 
-class S3ActionSuite extends FunSpec {
+class StorageQueueEventSuite extends FunSpec {
 
   describe("Ordering of types") {
     val remoteKey = RemoteKey("remote-key")
     val md5Hash = MD5Hash("md5hash")
-    val copy = CopyS3Action(remoteKey)
-    val upload = UploadS3Action(remoteKey, md5Hash)
-    val delete = DeleteS3Action(remoteKey)
+    val copy = CopyQueueEvent(remoteKey)
+    val upload = UploadQueueEvent(remoteKey, md5Hash)
+    val delete = DeleteQueueEvent(remoteKey)
     val unsorted = List(delete, copy, upload)
     it("should sort as copy < upload < delete ") {
       val result = unsorted.sorted
diff --git a/core/src/test/scala/net/kemitix/thorp/core/SyncSuite.scala b/core/src/test/scala/net/kemitix/thorp/core/SyncSuite.scala
index 864a4dd..6062242 100644
--- a/core/src/test/scala/net/kemitix/thorp/core/SyncSuite.scala
+++ b/core/src/test/scala/net/kemitix/thorp/core/SyncSuite.scala
@@ -4,11 +4,10 @@ import java.io.File
 import java.time.Instant
 
 import cats.effect.IO
-import net.kemitix.thorp.aws.api.S3Action.{CopyS3Action, DeleteS3Action, UploadS3Action}
-import net.kemitix.thorp.aws.api.{S3Client, UploadProgressListener}
 import net.kemitix.thorp.core.MD5HashData.{leafHash, rootHash}
-import net.kemitix.thorp.domain.Filter.Exclude
 import net.kemitix.thorp.domain._
+import net.kemitix.thorp.domain.StorageQueueEvent.{CopyQueueEvent, DeleteQueueEvent, UploadQueueEvent}
+import net.kemitix.thorp.storage.api.StorageService
 import org.scalatest.FunSpec
 
 class SyncSuite
@@ -35,30 +34,31 @@ class SyncSuite
     val rootRemoteKey = RemoteKey("prefix/root-file")
     val leafRemoteKey = RemoteKey("prefix/subdir/leaf-file")
 
-    def invokeSubject(s3Client: RecordingClient, configOptions: List[ConfigOption]) = {
-      Sync(s3Client)(configOptions).unsafeRunSync
+    def invokeSubject(storageService: StorageService,
+                      configOptions: List[ConfigOption]) = {
+      Sync(storageService)(configOptions).unsafeRunSync
     }
 
     describe("when all files should be uploaded") {
-      val s3Client = new RecordingClient(testBucket, S3ObjectsData(
+      val storageService = new RecordingStorageService(testBucket, S3ObjectsData(
         byHash = Map(),
         byKey = Map()))
       it("uploads all files") {
         val expectedUploads = Map(
           "subdir/leaf-file" -> leafRemoteKey,
           "root-file" -> rootRemoteKey)
-        invokeSubject(s3Client, configOptions)
-        assertResult(expectedUploads)(s3Client.uploadsRecord)
+        invokeSubject(storageService, configOptions)
+        assertResult(expectedUploads)(storageService.uploadsRecord)
       }
       it("copies nothing") {
         val expectedCopies = Map()
-        invokeSubject(s3Client, configOptions)
-        assertResult(expectedCopies)(s3Client.copiesRecord)
+        invokeSubject(storageService, configOptions)
+        assertResult(expectedCopies)(storageService.copiesRecord)
       }
       it("deletes nothing") {
         val expectedDeletions = Set()
-        invokeSubject(s3Client, configOptions)
-        assertResult(expectedDeletions)(s3Client.deletionsRecord)
+        invokeSubject(storageService, configOptions)
+        assertResult(expectedDeletions)(storageService.deletionsRecord)
       }
     }
     describe("when no files should be uploaded") {
@@ -69,21 +69,21 @@ class SyncSuite
         byKey = Map(
           RemoteKey("prefix/root-file") -> HashModified(rootHash, lastModified),
           RemoteKey("prefix/subdir/leaf-file") -> HashModified(leafHash, lastModified)))
-      val s3Client = new RecordingClient(testBucket, s3ObjectsData)
+      val storageService = new RecordingStorageService(testBucket, s3ObjectsData)
       it("uploads nothing") {
         val expectedUploads = Map()
-        invokeSubject(s3Client, configOptions)
-        assertResult(expectedUploads)(s3Client.uploadsRecord)
+        invokeSubject(storageService, configOptions)
+        assertResult(expectedUploads)(storageService.uploadsRecord)
       }
       it("copies nothing") {
         val expectedCopies = Map()
-        invokeSubject(s3Client, configOptions)
-        assertResult(expectedCopies)(s3Client.copiesRecord)
+        invokeSubject(storageService, configOptions)
+        assertResult(expectedCopies)(storageService.copiesRecord)
       }
       it("deletes nothing") {
         val expectedDeletions = Set()
-        invokeSubject(s3Client, configOptions)
-        assertResult(expectedDeletions)(s3Client.deletionsRecord)
+        invokeSubject(storageService, configOptions)
+        assertResult(expectedDeletions)(storageService.deletionsRecord)
       }
     }
     describe("when a file is renamed it is moved on S3 with no upload") {
@@ -95,21 +95,21 @@ class SyncSuite
         byKey = Map(
           RemoteKey("prefix/root-file-old") -> HashModified(rootHash, lastModified),
           RemoteKey("prefix/subdir/leaf-file") -> HashModified(leafHash, lastModified)))
-      val s3Client = new RecordingClient(testBucket, s3ObjectsData)
+      val storageService = new RecordingStorageService(testBucket, s3ObjectsData)
       it("uploads nothing") {
-        invokeSubject(s3Client, configOptions)
+        invokeSubject(storageService, configOptions)
         val expectedUploads = Map()
-        assertResult(expectedUploads)(s3Client.uploadsRecord)
+        assertResult(expectedUploads)(storageService.uploadsRecord)
       }
       it("copies the file") {
         val expectedCopies = Map(RemoteKey("prefix/root-file-old") -> RemoteKey("prefix/root-file"))
-        invokeSubject(s3Client, configOptions)
-        assertResult(expectedCopies)(s3Client.copiesRecord)
+        invokeSubject(storageService, configOptions)
+        assertResult(expectedCopies)(storageService.copiesRecord)
       }
       it("deletes the original") {
         val expectedDeletions = Set(RemoteKey("prefix/root-file-old"))
-        invokeSubject(s3Client, configOptions)
-        assertResult(expectedDeletions)(s3Client.deletionsRecord)
+        invokeSubject(storageService, configOptions)
+        assertResult(expectedDeletions)(storageService.deletionsRecord)
       }
     }
     describe("when a file is copied it is copied on S3 with no upload") {
@@ -125,29 +125,29 @@ class SyncSuite
           deletedHash -> Set(KeyModified(RemoteKey("prefix/deleted-file"), lastModified))),
         byKey = Map(
           deletedKey -> HashModified(deletedHash, lastModified)))
-      val s3Client = new RecordingClient(testBucket, s3ObjectsData)
+      val storageService = new RecordingStorageService(testBucket, s3ObjectsData)
       it("deleted key") {
         val expectedDeletions = Set(deletedKey)
-        invokeSubject(s3Client, configOptions)
-        assertResult(expectedDeletions)(s3Client.deletionsRecord)
+        invokeSubject(storageService, configOptions)
+        assertResult(expectedDeletions)(storageService.deletionsRecord)
       }
     }
     describe("when a file is excluded") {
       val s3ObjectsData = S3ObjectsData(Map(), Map())
-      val s3Client = new RecordingClient(testBucket, s3ObjectsData)
+      val storageService = new RecordingStorageService(testBucket, s3ObjectsData)
       it("is not uploaded") {
         val expectedUploads = Map(
           "root-file" -> rootRemoteKey
         )
-        invokeSubject(s3Client, ConfigOption.Exclude("leaf") :: configOptions)
-        assertResult(expectedUploads)(s3Client.uploadsRecord)
+        invokeSubject(storageService, ConfigOption.Exclude("leaf") :: configOptions)
+        assertResult(expectedUploads)(storageService.uploadsRecord)
       }
     }
   }
 
-  class RecordingClient(testBucket: Bucket,
-                        s3ObjectsData: S3ObjectsData)
-    extends S3Client {
+  class RecordingStorageService(testBucket: Bucket,
+                                s3ObjectsData: S3ObjectsData)
+    extends StorageService {
 
     var uploadsRecord: Map[String, RemoteKey] = Map()
     var copiesRecord: Map[RemoteKey, RemoteKey] = Map()
@@ -160,30 +160,30 @@ class SyncSuite
 
     override def upload(localFile: LocalFile,
                         bucket: Bucket,
-                        progressListener: UploadProgressListener,
+                        uploadEventListener: UploadEventListener,
                         tryCount: Int)
-                       (implicit logger: Logger): IO[UploadS3Action] = {
+                       (implicit logger: Logger): IO[UploadQueueEvent] = {
       if (bucket == testBucket)
         uploadsRecord += (localFile.relative.toString -> localFile.remoteKey)
-      IO.pure(UploadS3Action(localFile.remoteKey, localFile.hash))
+      IO.pure(UploadQueueEvent(localFile.remoteKey, localFile.hash))
     }
 
     override def copy(bucket: Bucket,
                       sourceKey: RemoteKey,
                       hash: MD5Hash,
                       targetKey: RemoteKey
-                     )(implicit logger: Logger): IO[CopyS3Action] = {
+                     )(implicit logger: Logger): IO[CopyQueueEvent] = {
       if (bucket == testBucket)
         copiesRecord += (sourceKey -> targetKey)
-      IO.pure(CopyS3Action(targetKey))
+      IO.pure(CopyQueueEvent(targetKey))
     }
 
     override def delete(bucket: Bucket,
                         remoteKey: RemoteKey
-                       )(implicit logger: Logger): IO[DeleteS3Action] = {
+                       )(implicit logger: Logger): IO[DeleteQueueEvent] = {
       if (bucket == testBucket)
         deletionsRecord += remoteKey
-      IO.pure(DeleteS3Action(remoteKey))
+      IO.pure(DeleteQueueEvent(remoteKey))
     }
   }
 }
diff --git a/domain/src/main/scala/net/kemitix/thorp/domain/StorageQueueEvent.scala b/domain/src/main/scala/net/kemitix/thorp/domain/StorageQueueEvent.scala
new file mode 100644
index 0000000..391d081
--- /dev/null
+++ b/domain/src/main/scala/net/kemitix/thorp/domain/StorageQueueEvent.scala
@@ -0,0 +1,37 @@
+package net.kemitix.thorp.domain
+
+sealed trait StorageQueueEvent {
+
+  // the remote key that was uploaded, deleted or otherwise updated by the action
+  def remoteKey: RemoteKey
+
+  val order: Int
+
+}
+
+object StorageQueueEvent {
+
+  final case class DoNothingQueueEvent(remoteKey: RemoteKey) extends StorageQueueEvent {
+    override val order: Int = 0
+  }
+
+  final case class CopyQueueEvent(remoteKey: RemoteKey) extends StorageQueueEvent {
+    override val order: Int = 1
+  }
+
+  final case class UploadQueueEvent(remoteKey: RemoteKey,
+                                    md5Hash: MD5Hash) extends StorageQueueEvent {
+    override val order: Int = 2
+  }
+
+  final case class DeleteQueueEvent(remoteKey: RemoteKey) extends StorageQueueEvent {
+    override val order: Int = 3
+  }
+
+  final case class ErrorQueueEvent(remoteKey: RemoteKey, e: Throwable) extends StorageQueueEvent {
+    override val order: Int = 10
+  }
+
+  implicit def ord[A <: StorageQueueEvent]: Ordering[A] = Ordering.by(_.order)
+
+}
diff --git a/domain/src/main/scala/net/kemitix/thorp/domain/Terminal.scala b/domain/src/main/scala/net/kemitix/thorp/domain/Terminal.scala
index 8354611..eb0d241 100644
--- a/domain/src/main/scala/net/kemitix/thorp/domain/Terminal.scala
+++ b/domain/src/main/scala/net/kemitix/thorp/domain/Terminal.scala
@@ -1,7 +1,5 @@
 package net.kemitix.thorp.domain
 
-import scala.io.AnsiColor._
-
 object Terminal {
 
   private val esc = "\u001B"
diff --git a/aws-api/src/main/scala/net/kemitix/thorp/aws/api/UploadEvent.scala b/domain/src/main/scala/net/kemitix/thorp/domain/UploadEvent.scala
similarity index 91%
rename from aws-api/src/main/scala/net/kemitix/thorp/aws/api/UploadEvent.scala
rename to domain/src/main/scala/net/kemitix/thorp/domain/UploadEvent.scala
index 7914308..db890c6 100644
--- a/aws-api/src/main/scala/net/kemitix/thorp/aws/api/UploadEvent.scala
+++ b/domain/src/main/scala/net/kemitix/thorp/domain/UploadEvent.scala
@@ -1,4 +1,4 @@
-package net.kemitix.thorp.aws.api
+package net.kemitix.thorp.domain
 
 sealed trait UploadEvent {
   def name: String
diff --git a/aws-api/src/main/scala/net/kemitix/thorp/aws/api/UploadProgressListener.scala b/domain/src/main/scala/net/kemitix/thorp/domain/UploadEventListener.scala
similarity index 51%
rename from aws-api/src/main/scala/net/kemitix/thorp/aws/api/UploadProgressListener.scala
rename to domain/src/main/scala/net/kemitix/thorp/domain/UploadEventListener.scala
index 0d8fcae..bac104a 100644
--- a/aws-api/src/main/scala/net/kemitix/thorp/aws/api/UploadProgressListener.scala
+++ b/domain/src/main/scala/net/kemitix/thorp/domain/UploadEventListener.scala
@@ -1,10 +1,9 @@
-package net.kemitix.thorp.aws.api
+package net.kemitix.thorp.domain
 
-import net.kemitix.thorp.aws.api.UploadEvent.RequestEvent
-import net.kemitix.thorp.domain.LocalFile
+import net.kemitix.thorp.domain.UploadEvent.RequestEvent
+import net.kemitix.thorp.domain.UploadEventLogger.logRequestCycle
 
-class UploadProgressListener(localFile: LocalFile)
-  extends UploadProgressLogging {
+class UploadEventListener(localFile: LocalFile) {
 
   var bytesTransferred = 0L
 
diff --git a/aws-api/src/main/scala/net/kemitix/thorp/aws/api/UploadProgressLogging.scala b/domain/src/main/scala/net/kemitix/thorp/domain/UploadEventLogger.scala
similarity index 80%
rename from aws-api/src/main/scala/net/kemitix/thorp/aws/api/UploadProgressLogging.scala
rename to domain/src/main/scala/net/kemitix/thorp/domain/UploadEventLogger.scala
index 3f9244e..26a8d24 100644
--- a/aws-api/src/main/scala/net/kemitix/thorp/aws/api/UploadProgressLogging.scala
+++ b/domain/src/main/scala/net/kemitix/thorp/domain/UploadEventLogger.scala
@@ -1,11 +1,10 @@
-package net.kemitix.thorp.aws.api
+package net.kemitix.thorp.domain
 
-import net.kemitix.thorp.aws.api.UploadEvent.RequestEvent
 import net.kemitix.thorp.domain.SizeTranslation.sizeInEnglish
 import net.kemitix.thorp.domain.Terminal._
-import net.kemitix.thorp.domain.{LocalFile, Terminal}
+import net.kemitix.thorp.domain.UploadEvent.RequestEvent
 
-trait UploadProgressLogging {
+trait UploadEventLogger {
 
   def logRequestCycle(localFile: LocalFile,
                       event: RequestEvent,
@@ -22,3 +21,5 @@ trait UploadProgressLogging {
   }
 
 }
+
+object UploadEventLogger extends UploadEventLogger
diff --git a/domain/src/test/scala/net/kemitix/thorp/domain/TerminalTest.scala b/domain/src/test/scala/net/kemitix/thorp/domain/TerminalTest.scala
index d2ce137..9a31997 100644
--- a/domain/src/test/scala/net/kemitix/thorp/domain/TerminalTest.scala
+++ b/domain/src/test/scala/net/kemitix/thorp/domain/TerminalTest.scala
@@ -1,7 +1,5 @@
 package net.kemitix.thorp.domain
 
-import scala.io.AnsiColor._
-
 import org.scalatest.FunSpec
 
 class TerminalTest extends FunSpec {
diff --git a/aws-api/src/main/scala/net/kemitix/thorp/aws/api/S3Client.scala b/storage-api/src/main/scala/net/kemitix/thorp/storage/api/StorageService.scala
similarity index 57%
rename from aws-api/src/main/scala/net/kemitix/thorp/aws/api/S3Client.scala
rename to storage-api/src/main/scala/net/kemitix/thorp/storage/api/StorageService.scala
index a8a92b3..dd2f826 100644
--- a/aws-api/src/main/scala/net/kemitix/thorp/aws/api/S3Client.scala
+++ b/storage-api/src/main/scala/net/kemitix/thorp/storage/api/StorageService.scala
@@ -1,10 +1,9 @@
-package net.kemitix.thorp.aws.api
+package net.kemitix.thorp.storage.api
 
 import cats.effect.IO
-import net.kemitix.thorp.aws.api.S3Action.{CopyS3Action, DeleteS3Action}
 import net.kemitix.thorp.domain._
 
-trait S3Client {
+trait StorageService {
 
   def listObjects(bucket: Bucket,
                   prefix: RemoteKey
@@ -12,18 +11,18 @@ trait S3Client {
 
   def upload(localFile: LocalFile,
              bucket: Bucket,
-             uploadProgressListener: UploadProgressListener,
+             uploadEventListener: UploadEventListener,
              tryCount: Int)
-            (implicit logger: Logger): IO[S3Action]
+            (implicit logger: Logger): IO[StorageQueueEvent]
 
   def copy(bucket: Bucket,
            sourceKey: RemoteKey,
            hash: MD5Hash,
            targetKey: RemoteKey
-          )(implicit logger: Logger): IO[CopyS3Action]
+          )(implicit logger: Logger): IO[StorageQueueEvent]
 
   def delete(bucket: Bucket,
              remoteKey: RemoteKey
-            )(implicit logger: Logger): IO[DeleteS3Action]
+            )(implicit logger: Logger): IO[StorageQueueEvent]
 
 }
diff --git a/aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/S3ClientCopier.scala b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ClientCopier.scala
similarity index 57%
rename from aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/S3ClientCopier.scala
rename to storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ClientCopier.scala
index df8ab38..cf73674 100644
--- a/aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/S3ClientCopier.scala
+++ b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ClientCopier.scala
@@ -1,11 +1,11 @@
-package net.kemitix.thorp.aws.lib
+package net.kemitix.thorp.storage.aws
 
 import cats.effect.IO
 import com.amazonaws.services.s3.AmazonS3
 import com.amazonaws.services.s3.model.CopyObjectRequest
-import net.kemitix.thorp.aws.api.S3Action.CopyS3Action
-import net.kemitix.thorp.aws.lib.S3ClientLogging.{logCopyFinish, logCopyStart}
-import net.kemitix.thorp.domain.{Bucket, Logger, MD5Hash, RemoteKey}
+import net.kemitix.thorp.domain.StorageQueueEvent.CopyQueueEvent
+import net.kemitix.thorp.domain._
+import net.kemitix.thorp.storage.aws.S3ClientLogging.{logCopyStart, logCopyFinish}
 
 class S3ClientCopier(amazonS3: AmazonS3) {
 
@@ -13,12 +13,12 @@ class S3ClientCopier(amazonS3: AmazonS3) {
            sourceKey: RemoteKey,
            hash: MD5Hash,
            targetKey: RemoteKey)
-          (implicit logger: Logger): IO[CopyS3Action] =
-  for {
-    _ <- logCopyStart(bucket, sourceKey, targetKey)
-    _ <- copyObject(bucket, sourceKey, hash, targetKey)
-    _ <- logCopyFinish(bucket, sourceKey,targetKey)
-  } yield CopyS3Action(targetKey)
+          (implicit logger: Logger): IO[StorageQueueEvent] =
+    for {
+      _ <- logCopyStart(bucket, sourceKey, targetKey)
+      _ <- copyObject(bucket, sourceKey, hash, targetKey)
+      _ <- logCopyFinish(bucket, sourceKey,targetKey)
+    } yield CopyQueueEvent(targetKey)
 
   private def copyObject(bucket: Bucket,
                          sourceKey: RemoteKey,
diff --git a/aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/S3ClientDeleter.scala b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ClientDeleter.scala
similarity index 66%
rename from aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/S3ClientDeleter.scala
rename to storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ClientDeleter.scala
index 68ed98b..c3e48cc 100644
--- a/aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/S3ClientDeleter.scala
+++ b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ClientDeleter.scala
@@ -1,22 +1,22 @@
-package net.kemitix.thorp.aws.lib
+package net.kemitix.thorp.storage.aws
 
 import cats.effect.IO
 import com.amazonaws.services.s3.AmazonS3
 import com.amazonaws.services.s3.model.DeleteObjectRequest
-import net.kemitix.thorp.aws.api.S3Action.DeleteS3Action
-import net.kemitix.thorp.aws.lib.S3ClientLogging.{logDeleteFinish, logDeleteStart}
+import net.kemitix.thorp.domain.StorageQueueEvent.DeleteQueueEvent
 import net.kemitix.thorp.domain.{Bucket, Logger, RemoteKey}
+import net.kemitix.thorp.storage.aws.S3ClientLogging.{logDeleteStart, logDeleteFinish}
 
 class S3ClientDeleter(amazonS3: AmazonS3) {
 
   def delete(bucket: Bucket,
              remoteKey: RemoteKey)
-            (implicit logger: Logger): IO[DeleteS3Action] =
+            (implicit logger: Logger): IO[DeleteQueueEvent] =
     for {
       _ <- logDeleteStart(bucket, remoteKey)
       _ <- deleteObject(bucket, remoteKey)
       _ <- logDeleteFinish(bucket, remoteKey)
-    } yield DeleteS3Action(remoteKey)
+    } yield DeleteQueueEvent(remoteKey)
 
   private def deleteObject(bucket: Bucket, remoteKey: RemoteKey) =
     IO(amazonS3.deleteObject(new DeleteObjectRequest(bucket.name, remoteKey.key)))
diff --git a/aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/S3ClientLogging.scala b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ClientLogging.scala
similarity index 97%
rename from aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/S3ClientLogging.scala
rename to storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ClientLogging.scala
index 7ada90e..c82348d 100644
--- a/aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/S3ClientLogging.scala
+++ b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ClientLogging.scala
@@ -1,4 +1,4 @@
-package net.kemitix.thorp.aws.lib
+package net.kemitix.thorp.storage.aws
 
 import cats.effect.IO
 import net.kemitix.thorp.domain.{Bucket, Logger, RemoteKey}
diff --git a/aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/S3ClientObjectLister.scala b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ClientObjectLister.scala
similarity index 87%
rename from aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/S3ClientObjectLister.scala
rename to storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ClientObjectLister.scala
index cc54677..6772c1c 100644
--- a/aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/S3ClientObjectLister.scala
+++ b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ClientObjectLister.scala
@@ -1,13 +1,13 @@
-package net.kemitix.thorp.aws.lib
+package net.kemitix.thorp.storage.aws
 
 import cats.effect.IO
 import com.amazonaws.services.s3.AmazonS3
 import com.amazonaws.services.s3.model.{ListObjectsV2Request, S3ObjectSummary}
-import net.kemitix.thorp.aws.lib.S3ClientLogging.{logListObjectsFinish, logListObjectsStart}
-import net.kemitix.thorp.aws.lib.S3ObjectsByHash.byHash
-import net.kemitix.thorp.aws.lib.S3ObjectsByKey.byKey
 import net.kemitix.thorp.domain
 import net.kemitix.thorp.domain.{Bucket, Logger, RemoteKey, S3ObjectsData}
+import net.kemitix.thorp.storage.aws.S3ClientLogging.{logListObjectsStart, logListObjectsFinish}
+import net.kemitix.thorp.storage.aws.S3ObjectsByHash.byHash
+import net.kemitix.thorp.storage.aws.S3ObjectsByKey.byKey
 
 import scala.collection.JavaConverters._
 
diff --git a/aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/S3ObjectsByHash.scala b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ObjectsByHash.scala
similarity index 94%
rename from aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/S3ObjectsByHash.scala
rename to storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ObjectsByHash.scala
index 86d6ecf..e985864 100644
--- a/aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/S3ObjectsByHash.scala
+++ b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ObjectsByHash.scala
@@ -1,4 +1,4 @@
-package net.kemitix.thorp.aws.lib
+package net.kemitix.thorp.storage.aws
 
 import com.amazonaws.services.s3.model.S3ObjectSummary
 import net.kemitix.thorp.domain.{KeyModified, LastModified, MD5Hash, RemoteKey}
diff --git a/aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/S3ObjectsByKey.scala b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ObjectsByKey.scala
similarity index 92%
rename from aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/S3ObjectsByKey.scala
rename to storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ObjectsByKey.scala
index 0459f79..5bcfc67 100644
--- a/aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/S3ObjectsByKey.scala
+++ b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ObjectsByKey.scala
@@ -1,4 +1,4 @@
-package net.kemitix.thorp.aws.lib
+package net.kemitix.thorp.storage.aws
 
 import com.amazonaws.services.s3.model.S3ObjectSummary
 import net.kemitix.thorp.domain.{HashModified, LastModified, MD5Hash, RemoteKey}
diff --git a/aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/ThorpS3Client.scala b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3StorageService.scala
similarity index 62%
rename from aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/ThorpS3Client.scala
rename to storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3StorageService.scala
index 403700b..1816659 100644
--- a/aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/ThorpS3Client.scala
+++ b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3StorageService.scala
@@ -1,15 +1,14 @@
-package net.kemitix.thorp.aws.lib
+package net.kemitix.thorp.storage.aws
 
 import cats.effect.IO
 import com.amazonaws.services.s3.AmazonS3
 import com.amazonaws.services.s3.transfer.TransferManager
-import net.kemitix.thorp.aws.api.S3Action.{CopyS3Action, DeleteS3Action}
-import net.kemitix.thorp.aws.api.{S3Action, S3Client, UploadProgressListener}
 import net.kemitix.thorp.domain._
+import net.kemitix.thorp.storage.api.StorageService
 
-class ThorpS3Client(amazonS3Client: => AmazonS3,
-                    amazonS3TransferManager: => TransferManager)
-  extends S3Client {
+class S3StorageService(amazonS3Client: => AmazonS3,
+                       amazonS3TransferManager: => TransferManager)
+  extends StorageService {
 
   lazy val objectLister = new S3ClientObjectLister(amazonS3Client)
   lazy val copier = new S3ClientCopier(amazonS3Client)
@@ -25,19 +24,19 @@ class ThorpS3Client(amazonS3Client: => AmazonS3,
                     sourceKey: RemoteKey,
                     hash: MD5Hash,
                     targetKey: RemoteKey)
-                   (implicit logger: Logger): IO[CopyS3Action] =
+                   (implicit logger: Logger): IO[StorageQueueEvent] =
     copier.copy(bucket, sourceKey,hash, targetKey)
 
   override def upload(localFile: LocalFile,
                       bucket: Bucket,
-                      progressListener: UploadProgressListener,
+                      uploadEventListener: UploadEventListener,
                       tryCount: Int)
-                     (implicit logger: Logger): IO[S3Action] =
-    uploader.upload(localFile, bucket, progressListener, 1)
+                     (implicit logger: Logger): IO[StorageQueueEvent] =
+    uploader.upload(localFile, bucket, uploadEventListener, 1)
 
   override def delete(bucket: Bucket,
                       remoteKey: RemoteKey)
-                     (implicit logger: Logger): IO[DeleteS3Action] =
+                     (implicit logger: Logger): IO[StorageQueueEvent] =
     deleter.delete(bucket, remoteKey)
 
 }
diff --git a/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3StorageServiceBuilder.scala b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3StorageServiceBuilder.scala
new file mode 100644
index 0000000..bcdfcaa
--- /dev/null
+++ b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3StorageServiceBuilder.scala
@@ -0,0 +1,16 @@
+package net.kemitix.thorp.storage.aws
+
+import com.amazonaws.services.s3.transfer.{TransferManager, TransferManagerBuilder}
+import com.amazonaws.services.s3.{AmazonS3, AmazonS3ClientBuilder}
+import net.kemitix.thorp.storage.api.StorageService
+
+object S3StorageServiceBuilder {
+
+  def createService(amazonS3Client: AmazonS3,
+                    amazonS3TransferManager: TransferManager): StorageService =
+    new S3StorageService(amazonS3Client, amazonS3TransferManager)
+
+  def defaultStorageService: StorageService =
+    createService(AmazonS3ClientBuilder.defaultClient, TransferManagerBuilder.defaultTransferManager)
+
+}
diff --git a/aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/Uploader.scala b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/Uploader.scala
similarity index 67%
rename from aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/Uploader.scala
rename to storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/Uploader.scala
index de69eb0..ab7d295 100644
--- a/aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/Uploader.scala
+++ b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/Uploader.scala
@@ -1,15 +1,14 @@
-package net.kemitix.thorp.aws.lib
+package net.kemitix.thorp.storage.aws
 
 import cats.effect.IO
 import com.amazonaws.event.{ProgressEvent, ProgressEventType, ProgressListener}
 import com.amazonaws.services.s3.model.{ObjectMetadata, PutObjectRequest}
 import com.amazonaws.services.s3.transfer.model.UploadResult
 import com.amazonaws.services.s3.transfer.{TransferManager => AmazonTransferManager}
-import net.kemitix.thorp.aws.api.S3Action.{ErroredS3Action, UploadS3Action}
-import net.kemitix.thorp.aws.api.UploadEvent.{ByteTransferEvent, RequestEvent, TransferEvent}
-import net.kemitix.thorp.aws.api.{S3Action, UploadProgressListener}
-import net.kemitix.thorp.aws.lib.UploaderLogging.{logMultiPartUploadFinished, logMultiPartUploadStart}
-import net.kemitix.thorp.domain._
+import net.kemitix.thorp.domain.StorageQueueEvent.{ErrorQueueEvent, UploadQueueEvent}
+import net.kemitix.thorp.domain.UploadEvent.{ByteTransferEvent, RequestEvent, TransferEvent}
+import net.kemitix.thorp.domain.{StorageQueueEvent, _}
+import net.kemitix.thorp.storage.aws.UploaderLogging.{logMultiPartUploadStart, logMultiPartUploadFinished}
 
 import scala.util.Try
 
@@ -17,24 +16,24 @@ class Uploader(transferManager: => AmazonTransferManager) {
 
   def upload(localFile: LocalFile,
              bucket: Bucket,
-             uploadProgressListener: UploadProgressListener,
+             uploadEventListener: UploadEventListener,
              tryCount: Int)
-            (implicit logger: Logger): IO[S3Action] =
+            (implicit logger: Logger): IO[StorageQueueEvent] =
     for {
       _ <- logMultiPartUploadStart(localFile, tryCount)
-      upload <- transfer(localFile, bucket, uploadProgressListener)
+      upload <- transfer(localFile, bucket, uploadEventListener)
       action = upload match {
-        case Right(r) => UploadS3Action(RemoteKey(r.getKey), MD5Hash(r.getETag))
-        case Left(e) => ErroredS3Action(localFile.remoteKey, e)
+        case Right(r) => UploadQueueEvent(RemoteKey(r.getKey), MD5Hash(r.getETag))
+        case Left(e) => ErrorQueueEvent(localFile.remoteKey, e)
       }
       _ <- logMultiPartUploadFinished(localFile)
     } yield action
 
   private def transfer(localFile: LocalFile,
                        bucket: Bucket,
-                       uploadProgressListener: UploadProgressListener,
+                       uploadEventListener: UploadEventListener,
                       ): IO[Either[Throwable, UploadResult]] = {
-    val listener: ProgressListener = progressListener(uploadProgressListener)
+    val listener: ProgressListener = progressListener(uploadEventListener)
     val putObjectRequest = request(localFile, bucket, listener)
     IO {
       Try(transferManager.upload(putObjectRequest))
@@ -51,10 +50,10 @@ class Uploader(transferManager: => AmazonTransferManager) {
       .withGeneralProgressListener(listener)
   }
 
-  private def progressListener(uploadProgressListener: UploadProgressListener) =
+  private def progressListener(uploadEventListener: UploadEventListener) =
     new ProgressListener {
       override def progressChanged(progressEvent: ProgressEvent): Unit = {
-        uploadProgressListener.listener(eventHandler(progressEvent))
+        uploadEventListener.listener(eventHandler(progressEvent))
       }
 
       private def eventHandler(progressEvent: ProgressEvent) = {
diff --git a/aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/UploaderLogging.scala b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/UploaderLogging.scala
similarity index 95%
rename from aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/UploaderLogging.scala
rename to storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/UploaderLogging.scala
index 944c468..fccec4c 100644
--- a/aws-lib/src/main/scala/net/kemitix/thorp/aws/lib/UploaderLogging.scala
+++ b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/UploaderLogging.scala
@@ -1,4 +1,4 @@
-package net.kemitix.thorp.aws.lib
+package net.kemitix.thorp.storage.aws
 
 import cats.effect.IO
 import net.kemitix.thorp.domain.SizeTranslation.sizeInEnglish
diff --git a/aws-lib/src/test/resources/net/kemitix/thorp/aws/lib/big-file b/storage-aws/src/test/resources/net/kemitix/thorp/storage/aws/big-file
similarity index 100%
rename from aws-lib/src/test/resources/net/kemitix/thorp/aws/lib/big-file
rename to storage-aws/src/test/resources/net/kemitix/thorp/storage/aws/big-file
diff --git a/aws-lib/src/test/resources/net/kemitix/thorp/aws/lib/small-file b/storage-aws/src/test/resources/net/kemitix/thorp/storage/aws/small-file
similarity index 100%
rename from aws-lib/src/test/resources/net/kemitix/thorp/aws/lib/small-file
rename to storage-aws/src/test/resources/net/kemitix/thorp/storage/aws/small-file
diff --git a/aws-lib/src/test/resources/net/kemitix/thorp/aws/lib/test-file-for-hash.txt b/storage-aws/src/test/resources/net/kemitix/thorp/storage/aws/test-file-for-hash.txt
similarity index 100%
rename from aws-lib/src/test/resources/net/kemitix/thorp/aws/lib/test-file-for-hash.txt
rename to storage-aws/src/test/resources/net/kemitix/thorp/storage/aws/test-file-for-hash.txt
diff --git a/aws-lib/src/test/resources/net/kemitix/thorp/aws/lib/upload/root-file b/storage-aws/src/test/resources/net/kemitix/thorp/storage/aws/upload/root-file
similarity index 100%
rename from aws-lib/src/test/resources/net/kemitix/thorp/aws/lib/upload/root-file
rename to storage-aws/src/test/resources/net/kemitix/thorp/storage/aws/upload/root-file
diff --git a/aws-lib/src/test/resources/net/kemitix/thorp/aws/lib/upload/subdir/leaf-file b/storage-aws/src/test/resources/net/kemitix/thorp/storage/aws/upload/subdir/leaf-file
similarity index 100%
rename from aws-lib/src/test/resources/net/kemitix/thorp/aws/lib/upload/subdir/leaf-file
rename to storage-aws/src/test/resources/net/kemitix/thorp/storage/aws/upload/subdir/leaf-file
diff --git a/aws-lib/src/test/scala/net/kemitix/thorp/aws/lib/DummyLogger.scala b/storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/DummyLogger.scala
similarity index 91%
rename from aws-lib/src/test/scala/net/kemitix/thorp/aws/lib/DummyLogger.scala
rename to storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/DummyLogger.scala
index 236e704..2807872 100644
--- a/aws-lib/src/test/scala/net/kemitix/thorp/aws/lib/DummyLogger.scala
+++ b/storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/DummyLogger.scala
@@ -1,4 +1,4 @@
-package net.kemitix.thorp.aws.lib
+package net.kemitix.thorp.storage.aws
 
 import cats.effect.IO
 import net.kemitix.thorp.domain.Logger
diff --git a/aws-lib/src/test/scala/net/kemitix/thorp/aws/lib/MD5HashData.scala b/storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/MD5HashData.scala
similarity index 83%
rename from aws-lib/src/test/scala/net/kemitix/thorp/aws/lib/MD5HashData.scala
rename to storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/MD5HashData.scala
index 7caef4c..9d38ff4 100644
--- a/aws-lib/src/test/scala/net/kemitix/thorp/aws/lib/MD5HashData.scala
+++ b/storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/MD5HashData.scala
@@ -1,4 +1,4 @@
-package net.kemitix.thorp.aws.lib
+package net.kemitix.thorp.storage.aws
 
 import net.kemitix.thorp.domain.MD5Hash
 
diff --git a/aws-lib/src/test/scala/net/kemitix/thorp/aws/lib/S3ObjectsByHashSuite.scala b/storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/S3ObjectsByHashSuite.scala
similarity index 97%
rename from aws-lib/src/test/scala/net/kemitix/thorp/aws/lib/S3ObjectsByHashSuite.scala
rename to storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/S3ObjectsByHashSuite.scala
index 74bc43f..c9a2452 100644
--- a/aws-lib/src/test/scala/net/kemitix/thorp/aws/lib/S3ObjectsByHashSuite.scala
+++ b/storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/S3ObjectsByHashSuite.scala
@@ -1,4 +1,4 @@
-package net.kemitix.thorp.aws.lib
+package net.kemitix.thorp.storage.aws
 
 import java.time.Instant
 import java.time.temporal.ChronoUnit
diff --git a/aws-lib/src/test/scala/net/kemitix/thorp/aws/lib/ThorpS3ClientSuite.scala b/storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/S3StorageServiceSuite.scala
similarity index 90%
rename from aws-lib/src/test/scala/net/kemitix/thorp/aws/lib/ThorpS3ClientSuite.scala
rename to storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/S3StorageServiceSuite.scala
index b62f172..4c52a93 100644
--- a/aws-lib/src/test/scala/net/kemitix/thorp/aws/lib/ThorpS3ClientSuite.scala
+++ b/storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/S3StorageServiceSuite.scala
@@ -1,4 +1,4 @@
-package net.kemitix.thorp.aws.lib
+package net.kemitix.thorp.storage.aws
 
 import java.time.Instant
 import java.time.temporal.ChronoUnit
@@ -12,7 +12,7 @@ import net.kemitix.thorp.domain._
 import org.scalamock.scalatest.MockFactory
 import org.scalatest.FunSpec
 
-class ThorpS3ClientSuite
+class S3StorageServiceSuite
   extends FunSpec
     with MockFactory {
 
@@ -47,7 +47,7 @@ class ThorpS3ClientSuite
 
     val amazonS3 = stub[AmazonS3]
     val amazonS3TransferManager = stub[TransferManager]
-    val s3Client = new ThorpS3Client(amazonS3, amazonS3TransferManager)
+    val storageService = new S3StorageService(amazonS3, amazonS3TransferManager)
 
     val myFakeResponse = new ListObjectsV2Result()
     val summaries = myFakeResponse.getObjectSummaries
@@ -65,7 +65,7 @@ class ThorpS3ClientSuite
           k1a -> HashModified(h1, lm),
           k1b -> HashModified(h1, lm),
           k2 -> HashModified(h2, lm)))
-      val result = s3Client.listObjects(Bucket("bucket"), RemoteKey("prefix")).unsafeRunSync
+      val result = storageService.listObjects(Bucket("bucket"), RemoteKey("prefix")).unsafeRunSync
       assertResult(expected.byHash.keys)(result.byHash.keys)
       assertResult(expected.byKey.keys)(result.byKey.keys)
       assertResult(expected)(result)
diff --git a/aws-lib/src/test/scala/net/kemitix/thorp/aws/lib/S3ClientSuite.scala b/storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/StorageServiceSuite.scala
similarity index 79%
rename from aws-lib/src/test/scala/net/kemitix/thorp/aws/lib/S3ClientSuite.scala
rename to storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/StorageServiceSuite.scala
index 2a6d53a..96b9ddb 100644
--- a/aws-lib/src/test/scala/net/kemitix/thorp/aws/lib/S3ClientSuite.scala
+++ b/storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/StorageServiceSuite.scala
@@ -1,4 +1,4 @@
-package net.kemitix.thorp.aws.lib
+package net.kemitix.thorp.storage.aws
 
 import java.time.Instant
 
@@ -6,15 +6,15 @@ import com.amazonaws.services.s3.AmazonS3
 import com.amazonaws.services.s3.model.PutObjectRequest
 import com.amazonaws.services.s3.transfer.model.UploadResult
 import com.amazonaws.services.s3.transfer.{TransferManager, Upload}
-import net.kemitix.thorp.aws.api.S3Action.UploadS3Action
-import net.kemitix.thorp.aws.api.{S3Client, UploadProgressListener}
-import net.kemitix.thorp.aws.lib.MD5HashData.rootHash
 import net.kemitix.thorp.core.{KeyGenerator, Resource, S3MetaDataEnricher}
+import net.kemitix.thorp.core.MD5HashData.rootHash
+import net.kemitix.thorp.domain.StorageQueueEvent.UploadQueueEvent
 import net.kemitix.thorp.domain._
+import net.kemitix.thorp.storage.api.StorageService
 import org.scalamock.scalatest.MockFactory
 import org.scalatest.FunSpec
 
-class S3ClientSuite
+class StorageServiceSuite
   extends FunSpec
     with MockFactory {
 
@@ -42,40 +42,40 @@ class S3ClientSuite
         keyotherkey.remoteKey -> HashModified(hash, lastModified),
         keydiffhash.remoteKey -> HashModified(diffhash, lastModified)))
 
-    def invoke(self: S3Client, localFile: LocalFile) = {
+    def invoke(self: StorageService, localFile: LocalFile) = {
       S3MetaDataEnricher.getS3Status(localFile, s3ObjectsData)
     }
 
     describe("when remote key exists") {
-      val s3Client = S3ClientBuilder.defaultClient
+      val storageService = S3StorageServiceBuilder.defaultStorageService
       it("should return (Some, Set.nonEmpty)") {
         assertResult(
           (Some(HashModified(hash, lastModified)),
             Set(
               KeyModified(key, lastModified),
               KeyModified(keyotherkey.remoteKey, lastModified)))
-        )(invoke(s3Client, localFile))
+        )(invoke(storageService, localFile))
       }
     }
 
     describe("when remote key does not exist and no others matches hash") {
-      val s3Client = S3ClientBuilder.defaultClient
+      val storageService = S3StorageServiceBuilder.defaultStorageService
       it("should return (None, Set.empty)") {
         val localFile = LocalFile.resolve("missing-file", MD5Hash("unique"), source, fileToKey)
         assertResult(
           (None,
             Set.empty)
-        )(invoke(s3Client, localFile))
+        )(invoke(storageService, localFile))
       }
     }
 
     describe("when remote key exists and no others match hash") {
-      val s3Client = S3ClientBuilder.defaultClient
+      val storageService = S3StorageServiceBuilder.defaultStorageService
       it("should return (None, Set.nonEmpty)") {
         assertResult(
           (Some(HashModified(diffhash, lastModified)),
             Set(KeyModified(keydiffhash.remoteKey, lastModified)))
-        )(invoke(s3Client, keydiffhash))
+        )(invoke(storageService, keydiffhash))
       }
     }
 
@@ -86,14 +86,14 @@ class S3ClientSuite
     describe("when uploading a file") {
       val amazonS3 = stub[AmazonS3]
       val amazonS3TransferManager = stub[TransferManager]
-      val s3Client = new ThorpS3Client(amazonS3, amazonS3TransferManager)
+      val storageService = new S3StorageService(amazonS3, amazonS3TransferManager)
 
       val prefix = RemoteKey("prefix")
       val localFile =
         LocalFile.resolve("root-file", rootHash, source, KeyGenerator.generateKey(source, prefix))
       val bucket = Bucket("a-bucket")
       val remoteKey = RemoteKey("prefix/root-file")
-      val progressListener = new UploadProgressListener(localFile)
+      val uploadEventListener = new UploadEventListener(localFile)
 
       val upload = stub[Upload]
       (amazonS3TransferManager upload (_: PutObjectRequest)).when(*).returns(upload)
@@ -105,8 +105,8 @@ class S3ClientSuite
       it("should return hash of uploaded file") {
         pending
         //FIXME: works okay on its own, but fails when run with others
-        val expected = UploadS3Action(remoteKey, rootHash)
-        val result = s3Client.upload(localFile, bucket, progressListener, 1)
+        val expected = UploadQueueEvent(remoteKey, rootHash)
+        val result = storageService.upload(localFile, bucket, uploadEventListener, 1)
         assertResult(expected)(result)
       }
     }
diff --git a/aws-lib/src/test/scala/net/kemitix/thorp/aws/lib/UploaderSuite.scala b/storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/UploaderSuite.scala
similarity index 80%
rename from aws-lib/src/test/scala/net/kemitix/thorp/aws/lib/UploaderSuite.scala
rename to storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/UploaderSuite.scala
index e8a5ff1..30b613d 100644
--- a/aws-lib/src/test/scala/net/kemitix/thorp/aws/lib/UploaderSuite.scala
+++ b/storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/UploaderSuite.scala
@@ -1,14 +1,13 @@
-package net.kemitix.thorp.aws.lib
+package net.kemitix.thorp.storage.aws
 
 import java.time.Instant
 
 import com.amazonaws.services.s3.AmazonS3
 import com.amazonaws.services.s3.transfer._
-import net.kemitix.thorp.aws.api.S3Action.UploadS3Action
-import net.kemitix.thorp.aws.api.UploadProgressListener
 import net.kemitix.thorp.core.KeyGenerator.generateKey
 import net.kemitix.thorp.core.Resource
-import net.kemitix.thorp.domain._
+import net.kemitix.thorp.domain.{UploadEventListener, _}
+import net.kemitix.thorp.domain.StorageQueueEvent.UploadQueueEvent
 import org.scalamock.scalatest.MockFactory
 import org.scalatest.FunSpec
 
@@ -33,13 +32,13 @@ class UploaderSuite
       val returnedKey = RemoteKey("returned-key")
       val returnedHash = MD5Hash("returned-hash")
       val bigFile = LocalFile.resolve("small-file", MD5Hash("the-hash"), source, fileToKey)
-      val progressListener = new UploadProgressListener(bigFile)
+      val uploadEventListener = new UploadEventListener(bigFile)
       val amazonS3 = mock[AmazonS3]
       val amazonS3TransferManager = TransferManagerBuilder.standard().withS3Client(amazonS3).build
       val uploader = new Uploader(amazonS3TransferManager)
       it("should upload") {
-        val expected = UploadS3Action(returnedKey, returnedHash)
-        val result = uploader.upload(bigFile, config.bucket, progressListener, 1)
+        val expected = UploadQueueEvent(returnedKey, returnedHash)
+        val result = uploader.upload(bigFile, config.bucket, uploadEventListener, 1)
         assertResult(expected)(result)
       }
     }