diff --git a/CHANGELOG.org b/CHANGELOG.org
index 4659175..efb9d5d 100644
--- a/CHANGELOG.org
+++ b/CHANGELOG.org
@@ -10,6 +10,7 @@ The format is based on [[https://keepachangelog.com/en/1.0.0/][Keep a Changelog]
 ** Added
 
    - Add a version command-line option (#99)
+   - Add a batch mode (#85)
 
 * [0.6.0] - 2019-06-30
 
diff --git a/README.org b/README.org
index 6234694..59a93db 100644
--- a/README.org
+++ b/README.org
@@ -16,6 +16,8 @@ hash of the file contents.
     thorp
     Usage: thorp [options]
 
+      -V, --version         Display the version and quit
+      -B, --batch           Enabled batch-mode
       -s, --source <value>  Source directory to sync to S3
       -b, --bucket <value>  S3 bucket name
       -p, --prefix <value>  Prefix within the S3 Bucket
@@ -30,6 +32,11 @@ If you don't provide a ~source~ the current diretory will be used.
 
 The ~--include~ and ~--exclude~ parameters can be used more than once.
 
+** Batch mode
+
+Batch mode disable the ANSI console display and logs simple messages
+that can be written to a file.
+
 * Configuration
 
   Configuration will be read from these files:
diff --git a/cli/src/main/scala/net/kemitix/thorp/cli/Main.scala b/cli/src/main/scala/net/kemitix/thorp/cli/Main.scala
index af4dba3..251d30f 100644
--- a/cli/src/main/scala/net/kemitix/thorp/cli/Main.scala
+++ b/cli/src/main/scala/net/kemitix/thorp/cli/Main.scala
@@ -8,7 +8,7 @@ object Main extends IOApp {
   override def run(args: List[String]): IO[ExitCode] = {
     val exitCaseLogger = new PrintLogger(false)
     ParseArgs(args)
-      .map(Program(_))
+      .map(Program.run)
       .getOrElse(IO(ExitCode.Error))
       .guaranteeCase {
           case Canceled => exitCaseLogger.warn("Interrupted")
diff --git a/cli/src/main/scala/net/kemitix/thorp/cli/ParseArgs.scala b/cli/src/main/scala/net/kemitix/thorp/cli/ParseArgs.scala
index 843ca27..6de4dba 100644
--- a/cli/src/main/scala/net/kemitix/thorp/cli/ParseArgs.scala
+++ b/cli/src/main/scala/net/kemitix/thorp/cli/ParseArgs.scala
@@ -2,7 +2,7 @@ package net.kemitix.thorp.cli
 
 import java.nio.file.Paths
 
-import net.kemitix.thorp.core.ConfigOption
+import net.kemitix.thorp.core.{ConfigOption, ConfigOptions}
 import scopt.OParser
 
 object ParseArgs {
@@ -14,8 +14,11 @@ object ParseArgs {
       programName("thorp"),
       head("thorp"),
       opt[Unit]('V', "version")
-          .action((_, cos) => ConfigOption.Version :: cos)
-          .text("Show version"),
+        .action((_, cos) => ConfigOption.Version :: cos)
+        .text("Show version"),
+      opt[Unit]('B', "batch")
+        .action((_, cos) => ConfigOption.BatchMode :: cos)
+        .text("Enable batch-mode"),
       opt[String]('s', "source")
         .action((str, cos) => ConfigOption.Source(Paths.get(str)) :: cos)
         .text("Source directory to sync to destination"),
@@ -45,7 +48,8 @@ object ParseArgs {
     )
   }
 
-  def apply(args: List[String]): Option[List[ConfigOption]] =
+  def apply(args: List[String]): Option[ConfigOptions] =
     OParser.parse(configParser, args, List())
+      .map(ConfigOptions)
 
 }
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 529cfd4..f100a2d 100644
--- a/cli/src/main/scala/net/kemitix/thorp/cli/Program.scala
+++ b/cli/src/main/scala/net/kemitix/thorp/cli/Program.scala
@@ -9,19 +9,19 @@ import net.kemitix.thorp.storage.aws.S3StorageServiceBuilder.defaultStorageServi
 
 trait Program {
 
-  def apply(cliOptions: Seq[ConfigOption]): IO[ExitCode] = {
+  def run(cliOptions: ConfigOptions): IO[ExitCode] = {
     implicit val logger: Logger = new PrintLogger()
     if (ConfigQuery.showVersion(cliOptions)) IO {
         println(s"Thorp v${thorp.BuildInfo.version}")
         ExitCode.Success
-    } else
+    } else {
       for {
-        storageService <- defaultStorageService
-        actions <- Synchronise(storageService, defaultHashService, cliOptions).valueOrF(handleErrors)
-        events <- handleActions(UnversionedMirrorArchive.default(storageService), actions)
-        _ <- storageService.shutdown
+        actions <- Synchronise.createPlan(defaultStorageService, defaultHashService, cliOptions).valueOrF(handleErrors)
+        events <- handleActions(UnversionedMirrorArchive.default(defaultStorageService, ConfigQuery.batchMode(cliOptions)), actions)
+        _ <- defaultStorageService.shutdown
         _ <- SyncLogging.logRunFinished(events)
       } yield ExitCode.Success
+    }
   }
 
   private def handleErrors(implicit logger: Logger): List[String] => IO[Stream[Action]] = {
@@ -34,7 +34,8 @@ trait Program {
   }
 
   private def handleActions(archive: ThorpArchive,
-                            actions: Stream[Action]): IO[Stream[StorageQueueEvent]] =
+                            actions: Stream[Action])
+                           (implicit l: Logger): IO[Stream[StorageQueueEvent]] =
     actions.foldLeft(Stream[IO[StorageQueueEvent]]()) {
       (stream, action) => archive.update(action) ++ stream
     }.sequence
diff --git a/cli/src/test/scala/net/kemitix/thorp/cli/ParseArgsTest.scala b/cli/src/test/scala/net/kemitix/thorp/cli/ParseArgsTest.scala
index 74efca9..94f308e 100644
--- a/cli/src/test/scala/net/kemitix/thorp/cli/ParseArgsTest.scala
+++ b/cli/src/test/scala/net/kemitix/thorp/cli/ParseArgsTest.scala
@@ -1,7 +1,7 @@
 package net.kemitix.thorp.cli
 
 import net.kemitix.thorp.core.ConfigOption.Debug
-import net.kemitix.thorp.core.{ConfigOption, Resource}
+import net.kemitix.thorp.core.{ConfigOptions, Resource}
 import org.scalatest.FunSpec
 
 import scala.util.Try
@@ -26,11 +26,11 @@ class ParseArgsTest extends FunSpec {
   }
 
   describe("parse - debug") {
-    def invokeWithArgument(arg: String): List[ConfigOption] = {
+    def invokeWithArgument(arg: String): ConfigOptions = {
       val strings = List("--source", pathTo("."), "--bucket", "bucket", arg)
           .filter(_ != "")
       val maybeOptions = ParseArgs(strings)
-      maybeOptions.getOrElse(List())
+      maybeOptions.getOrElse(ConfigOptions())
     }
 
     describe("when no debug flag") {
diff --git a/core/src/main/scala/net/kemitix/thorp/core/ConfigOption.scala b/core/src/main/scala/net/kemitix/thorp/core/ConfigOption.scala
index 87aea8f..ee2a99c 100644
--- a/core/src/main/scala/net/kemitix/thorp/core/ConfigOption.scala
+++ b/core/src/main/scala/net/kemitix/thorp/core/ConfigOption.scala
@@ -13,6 +13,9 @@ object ConfigOption {
   case object Version extends ConfigOption {
     override def update(config: Config): Config = config
   }
+  case object BatchMode extends ConfigOption {
+    override def update(config: Config): Config = config.copy(batchMode = true)
+  }
   case class Source(path: Path) extends ConfigOption {
     override def update(config: Config): Config = config.copy(source = path.toFile)
   }
diff --git a/core/src/main/scala/net/kemitix/thorp/core/ConfigOptions.scala b/core/src/main/scala/net/kemitix/thorp/core/ConfigOptions.scala
new file mode 100644
index 0000000..a7ea8b6
--- /dev/null
+++ b/core/src/main/scala/net/kemitix/thorp/core/ConfigOptions.scala
@@ -0,0 +1,20 @@
+package net.kemitix.thorp.core
+
+import cats.Semigroup
+
+case class ConfigOptions(options: List[ConfigOption] = List())
+    extends Semigroup[ConfigOptions] {
+
+  override def combine(x: ConfigOptions, y: ConfigOptions): ConfigOptions =
+    x ++ y
+
+  def ++(other: ConfigOptions): ConfigOptions =
+    ConfigOptions(options ++ other.options)
+
+  def ::(head: ConfigOption): ConfigOptions =
+    ConfigOptions(head :: options)
+
+  def contains[A1 >: ConfigOption](elem: A1): Boolean =
+    options contains elem
+
+}
diff --git a/core/src/main/scala/net/kemitix/thorp/core/ConfigQuery.scala b/core/src/main/scala/net/kemitix/thorp/core/ConfigQuery.scala
index 685b05c..1ace770 100644
--- a/core/src/main/scala/net/kemitix/thorp/core/ConfigQuery.scala
+++ b/core/src/main/scala/net/kemitix/thorp/core/ConfigQuery.scala
@@ -2,23 +2,17 @@ package net.kemitix.thorp.core
 
 trait ConfigQuery {
 
-  def showVersion(configOptions: Seq[ConfigOption]): Boolean =
-    configOptions.exists {
-      case ConfigOption.Version => true
-      case _ => false
-    }
+  def showVersion(configOptions: ConfigOptions): Boolean =
+    configOptions contains ConfigOption.Version
 
-  def ignoreUserOptions(configOptions: Seq[ConfigOption]): Boolean =
-    configOptions.exists {
-      case ConfigOption.IgnoreUserOptions => true
-      case _ => false
-    }
+  def batchMode(configOptions: ConfigOptions): Boolean =
+    configOptions contains ConfigOption.BatchMode
 
-  def ignoreGlobalOptions(configOptions: Seq[ConfigOption]): Boolean =
-    configOptions.exists {
-      case ConfigOption.IgnoreGlobalOptions => true
-      case _ => false
-    }
+  def ignoreUserOptions(configOptions: ConfigOptions): Boolean =
+    configOptions contains ConfigOption.IgnoreUserOptions
+
+  def ignoreGlobalOptions(configOptions: ConfigOptions): Boolean =
+    configOptions contains ConfigOption.IgnoreGlobalOptions
 
 }
 
diff --git a/core/src/main/scala/net/kemitix/thorp/core/ConfigurationBuilder.scala b/core/src/main/scala/net/kemitix/thorp/core/ConfigurationBuilder.scala
index 11afe72..615c9ba 100644
--- a/core/src/main/scala/net/kemitix/thorp/core/ConfigurationBuilder.scala
+++ b/core/src/main/scala/net/kemitix/thorp/core/ConfigurationBuilder.scala
@@ -19,7 +19,7 @@ trait ConfigurationBuilder {
 
   private val defaultConfig: Config = Config(source = pwdFile)
 
-  def buildConfig(priorityOptions: Seq[ConfigOption]): IO[Either[NonEmptyChain[ConfigValidation], Config]] = {
+  def buildConfig(priorityOptions: ConfigOptions): IO[Either[NonEmptyChain[ConfigValidation], Config]] = {
     val source = findSource(priorityOptions)
     for {
       sourceOptions <- sourceOptions(source)
@@ -30,30 +30,30 @@ trait ConfigurationBuilder {
     } yield validateConfig(config).toEither
   }
 
-  private def findSource(priorityOptions: Seq[ConfigOption]): File =
-    priorityOptions.foldRight(pwdFile)((co, f) => co match {
+  private def findSource(priorityOptions: ConfigOptions): File =
+    priorityOptions.options.foldRight(pwdFile)((co, f) => co match {
       case ConfigOption.Source(source) => source.toFile
       case _ => f
     })
 
-  private def sourceOptions(source: File): IO[Seq[ConfigOption]] =
+  private def sourceOptions(source: File): IO[ConfigOptions] =
     readFile(source, ".thorp.conf")
 
-  private def userOptions(higherPriorityOptions: Seq[ConfigOption]): IO[Seq[ConfigOption]] =
-    if (ConfigQuery.ignoreUserOptions(higherPriorityOptions)) IO(List())
+  private def userOptions(higherPriorityOptions: ConfigOptions): IO[ConfigOptions] =
+    if (ConfigQuery.ignoreUserOptions(higherPriorityOptions)) IO(ConfigOptions())
     else readFile(userHome, ".config/thorp.conf")
 
-  private def globalOptions(higherPriorityOptions: Seq[ConfigOption]): IO[Seq[ConfigOption]] =
-    if (ConfigQuery.ignoreGlobalOptions(higherPriorityOptions)) IO(List())
+  private def globalOptions(higherPriorityOptions: ConfigOptions): IO[ConfigOptions] =
+    if (ConfigQuery.ignoreGlobalOptions(higherPriorityOptions)) IO(ConfigOptions())
     else parseFile(Paths.get("/etc/thorp.conf"))
 
   private def userHome = new File(System.getProperty("user.home"))
 
-  private def readFile(source: File, filename: String): IO[Seq[ConfigOption]] =
+  private def readFile(source: File, filename: String): IO[ConfigOptions] =
     parseFile(source.toPath.resolve(filename))
 
-  private def collateOptions(configOptions: Seq[ConfigOption]): Config =
-    configOptions.foldRight(defaultConfig)((co, c) => co.update(c))
+  private def collateOptions(configOptions: ConfigOptions): Config =
+    configOptions.options.foldRight(defaultConfig)((co, c) => co.update(c))
 }
 
 object ConfigurationBuilder extends ConfigurationBuilder
diff --git a/core/src/main/scala/net/kemitix/thorp/core/ParseConfigFile.scala b/core/src/main/scala/net/kemitix/thorp/core/ParseConfigFile.scala
index 935065a..7cc16f5 100644
--- a/core/src/main/scala/net/kemitix/thorp/core/ParseConfigFile.scala
+++ b/core/src/main/scala/net/kemitix/thorp/core/ParseConfigFile.scala
@@ -8,7 +8,7 @@ import scala.collection.JavaConverters._
 
 trait ParseConfigFile {
 
-  def parseFile(filename: Path): IO[Seq[ConfigOption]] =
+  def parseFile(filename: Path): IO[ConfigOptions] =
     readFile(filename).map(ParseConfigLines.parseLines)
 
   private def readFile(filename: Path) = {
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 5c9cc36..fa91527 100644
--- a/core/src/main/scala/net/kemitix/thorp/core/ParseConfigLines.scala
+++ b/core/src/main/scala/net/kemitix/thorp/core/ParseConfigLines.scala
@@ -7,8 +7,8 @@ import net.kemitix.thorp.core.ConfigOption._
 
 trait ParseConfigLines {
 
-  def parseLines(lines: List[String]): List[ConfigOption] =
-    lines.flatMap(parseLine)
+  def parseLines(lines: List[String]): ConfigOptions =
+    ConfigOptions(lines.flatMap(parseLine))
 
   private val pattern = "^\\s*(?<key>\\S*)\\s*=\\s*(?<value>\\S*)\\s*$"
   private val format = Pattern.compile(pattern)
diff --git a/core/src/main/scala/net/kemitix/thorp/core/Synchronise.scala b/core/src/main/scala/net/kemitix/thorp/core/Synchronise.scala
index 8e8d494..ca4bf13 100644
--- a/core/src/main/scala/net/kemitix/thorp/core/Synchronise.scala
+++ b/core/src/main/scala/net/kemitix/thorp/core/Synchronise.scala
@@ -9,12 +9,12 @@ import net.kemitix.thorp.storage.api.{HashService, StorageService}
 
 trait Synchronise {
 
-  def apply(storageService: StorageService,
+  def createPlan(storageService: StorageService,
             hashService: HashService,
-            configOptions: Seq[ConfigOption])
+            configOptions: ConfigOptions)
            (implicit l: Logger): EitherT[IO, List[String], Stream[Action]] =
     EitherT(ConfigurationBuilder.buildConfig(configOptions))
-      .swap.map(errorMessages).swap
+      .leftMap(errorMessages)
       .flatMap(config => useValidConfig(storageService, hashService)(config, l))
 
   def errorMessages(errors: NonEmptyChain[ConfigValidation]): List[String] =
diff --git a/core/src/main/scala/net/kemitix/thorp/core/ThorpArchive.scala b/core/src/main/scala/net/kemitix/thorp/core/ThorpArchive.scala
index 6889bcc..ed026bb 100644
--- a/core/src/main/scala/net/kemitix/thorp/core/ThorpArchive.scala
+++ b/core/src/main/scala/net/kemitix/thorp/core/ThorpArchive.scala
@@ -1,10 +1,15 @@
 package net.kemitix.thorp.core
 
 import cats.effect.IO
-import net.kemitix.thorp.domain.StorageQueueEvent
+import net.kemitix.thorp.domain.{LocalFile, Logger, StorageQueueEvent}
 
 trait ThorpArchive {
 
-  def update(action: Action): Stream[IO[StorageQueueEvent]]
+  def update(action: Action)(implicit l: Logger): Stream[IO[StorageQueueEvent]]
+
+  def fileUploaded(localFile: LocalFile,
+                   batchMode: Boolean)
+                  (implicit l: Logger): IO[Unit] =
+    if (batchMode) l.info(s"Uploaded: ${localFile.remoteKey.key}") else IO.unit
 
 }
diff --git a/core/src/main/scala/net/kemitix/thorp/core/UnversionedMirrorArchive.scala b/core/src/main/scala/net/kemitix/thorp/core/UnversionedMirrorArchive.scala
index cc7c8c9..3e3cbb7 100644
--- a/core/src/main/scala/net/kemitix/thorp/core/UnversionedMirrorArchive.scala
+++ b/core/src/main/scala/net/kemitix/thorp/core/UnversionedMirrorArchive.scala
@@ -3,16 +3,19 @@ package net.kemitix.thorp.core
 import cats.effect.IO
 import net.kemitix.thorp.core.Action.{DoNothing, ToCopy, ToDelete, ToUpload}
 import net.kemitix.thorp.domain.StorageQueueEvent.DoNothingQueueEvent
-import net.kemitix.thorp.domain.{StorageQueueEvent, UploadEventListener}
+import net.kemitix.thorp.domain.{LocalFile, Logger, StorageQueueEvent, UploadEventListener}
 import net.kemitix.thorp.storage.api.StorageService
 
-case class UnversionedMirrorArchive(storageService: StorageService) extends ThorpArchive {
-  override def update(action: Action): Stream[IO[StorageQueueEvent]] =
+case class UnversionedMirrorArchive(storageService: StorageService,
+                                    batchMode: Boolean) extends ThorpArchive {
+  override def update(action: Action)
+                     (implicit l: Logger): Stream[IO[StorageQueueEvent]] =
     Stream(
       action match {
         case ToUpload(bucket, localFile) =>
           for {
-            event <- storageService.upload(localFile, bucket, new UploadEventListener(localFile), 1)
+            event <- storageService.upload(localFile, bucket, batchMode, new UploadEventListener(localFile), 1)
+            _ <- fileUploaded(localFile, batchMode)
           } yield event
         case ToCopy(bucket, sourceKey, hash, targetKey) =>
           for {
@@ -29,6 +32,7 @@ case class UnversionedMirrorArchive(storageService: StorageService) extends Thor
 }
 
 object UnversionedMirrorArchive {
-  def default(storageService: StorageService): ThorpArchive =
-    new UnversionedMirrorArchive(storageService)
+  def default(storageService: StorageService,
+              batchMode: Boolean): ThorpArchive =
+    new UnversionedMirrorArchive(storageService, batchMode)
 }
diff --git a/core/src/test/scala/net/kemitix/thorp/core/ParseConfigFileTest.scala b/core/src/test/scala/net/kemitix/thorp/core/ParseConfigFileTest.scala
index 7a11de4..3a7f92e 100644
--- a/core/src/test/scala/net/kemitix/thorp/core/ParseConfigFileTest.scala
+++ b/core/src/test/scala/net/kemitix/thorp/core/ParseConfigFileTest.scala
@@ -7,7 +7,7 @@ import org.scalatest.FunSpec
 class ParseConfigFileTest extends FunSpec {
 
   private def invoke(filename: Path) = ParseConfigFile.parseFile(filename).unsafeRunSync
-  private val empty = List()
+  private val empty = ConfigOptions()
 
   describe("parse a missing file") {
     val filename = Paths.get("/path/to/missing/file")
@@ -29,7 +29,9 @@ class ParseConfigFileTest extends FunSpec {
   }
   describe("parse a file with properties") {
     val filename = Resource(this, "simple-config").toPath
-    val expected = List(ConfigOption.Source(Paths.get("/path/to/source")), ConfigOption.Bucket("bucket-name"))
+    val expected = ConfigOptions(List(
+      ConfigOption.Source(Paths.get("/path/to/source")),
+      ConfigOption.Bucket("bucket-name")))
     it("should return some options") {
       assertResult(expected)(invoke(filename))
     }
diff --git a/core/src/test/scala/net/kemitix/thorp/core/ParseConfigLinesTest.scala b/core/src/test/scala/net/kemitix/thorp/core/ParseConfigLinesTest.scala
index 525a858..1894e84 100644
--- a/core/src/test/scala/net/kemitix/thorp/core/ParseConfigLinesTest.scala
+++ b/core/src/test/scala/net/kemitix/thorp/core/ParseConfigLinesTest.scala
@@ -9,63 +9,63 @@ class ParseConfigLinesTest extends FunSpec {
   describe("parse single lines") {
     describe("source") {
       it("should parse") {
-        val expected = List(ConfigOption.Source(Paths.get("/path/to/source")))
+        val expected = ConfigOptions(List(ConfigOption.Source(Paths.get("/path/to/source"))))
         val result = ParseConfigLines.parseLines(List("source = /path/to/source"))
         assertResult(expected)(result)
       }
     }
     describe("bucket") {
       it("should parse") {
-        val expected = List(ConfigOption.Bucket("bucket-name"))
+        val expected = ConfigOptions(List(ConfigOption.Bucket("bucket-name")))
         val result = ParseConfigLines.parseLines(List("bucket = bucket-name"))
         assertResult(expected)(result)
       }
     }
     describe("prefix") {
       it("should parse") {
-        val expected = List(ConfigOption.Prefix("prefix/to/files"))
+        val expected = ConfigOptions(List(ConfigOption.Prefix("prefix/to/files")))
         val result = ParseConfigLines.parseLines(List("prefix = prefix/to/files"))
         assertResult(expected)(result)
       }
     }
     describe("include") {
       it("should parse") {
-        val expected = List(ConfigOption.Include("path/to/include"))
+        val expected = ConfigOptions(List(ConfigOption.Include("path/to/include")))
         val result = ParseConfigLines.parseLines(List("include = path/to/include"))
         assertResult(expected)(result)
       }
     }
     describe("exclude") {
       it("should parse") {
-        val expected = List(ConfigOption.Exclude("path/to/exclude"))
+        val expected = ConfigOptions(List(ConfigOption.Exclude("path/to/exclude")))
         val result = ParseConfigLines.parseLines(List("exclude = path/to/exclude"))
         assertResult(expected)(result)
       }
     }
     describe("debug - true") {
       it("should parse") {
-        val expected = List(ConfigOption.Debug())
+        val expected = ConfigOptions(List(ConfigOption.Debug()))
         val result = ParseConfigLines.parseLines(List("debug = true"))
         assertResult(expected)(result)
       }
     }
     describe("debug - false") {
       it("should parse") {
-        val expected = List()
+        val expected = ConfigOptions()
         val result = ParseConfigLines.parseLines(List("debug = false"))
         assertResult(expected)(result)
       }
     }
     describe("comment line") {
       it("should be ignored") {
-        val expected = List()
+        val expected = ConfigOptions()
         val result = ParseConfigLines.parseLines(List("# ignore me"))
         assertResult(expected)(result)
       }
     }
     describe("unrecognised option") {
       it("should be ignored") {
-        val expected = List()
+        val expected = ConfigOptions()
         val result = ParseConfigLines.parseLines(List("unsupported = option"))
         assertResult(expected)(result)
       }
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 bf2ec98..c56b0eb 100644
--- a/core/src/test/scala/net/kemitix/thorp/core/SyncSuite.scala
+++ b/core/src/test/scala/net/kemitix/thorp/core/SyncSuite.scala
@@ -18,13 +18,13 @@ class SyncSuite
 
   private val source = Resource(this, "upload")
   private val prefix = RemoteKey("prefix")
-  private val configOptions = List(
+  private val configOptions = ConfigOptions(List(
     ConfigOption.Source(source.toPath),
     ConfigOption.Bucket("bucket"),
     ConfigOption.Prefix("prefix"),
     ConfigOption.IgnoreGlobalOptions,
     ConfigOption.IgnoreUserOptions
-  )
+  ))
   implicit private val logger: Logger = new DummyLogger
   private val lastModified = LastModified(Instant.now)
 
@@ -50,8 +50,8 @@ class SyncSuite
 
   def invokeSubject(storageService: StorageService,
                     hashService: HashService,
-                    configOptions: List[ConfigOption]): Either[List[String], Stream[Action]] = {
-    Synchronise(storageService, hashService, configOptions).value.unsafeRunSync
+                    configOptions: ConfigOptions): Either[List[String], Stream[Action]] = {
+    Synchronise.createPlan(storageService, hashService, configOptions).value.unsafeRunSync
   }
 
   describe("when all files should be uploaded") {
@@ -162,6 +162,7 @@ class SyncSuite
 
     override def upload(localFile: LocalFile,
                         bucket: Bucket,
+                        batchMode: Boolean,
                         uploadEventListener: UploadEventListener,
                         tryCount: Int): IO[UploadQueueEvent] =
       IO.pure(UploadQueueEvent(localFile.remoteKey, localFile.hashes("md5")))
diff --git a/domain/src/main/scala/net/kemitix/thorp/domain/Config.scala b/domain/src/main/scala/net/kemitix/thorp/domain/Config.scala
index bad59ff..f326c90 100644
--- a/domain/src/main/scala/net/kemitix/thorp/domain/Config.scala
+++ b/domain/src/main/scala/net/kemitix/thorp/domain/Config.scala
@@ -6,4 +6,5 @@ final case class Config(bucket: Bucket = Bucket(""),
                         prefix: RemoteKey = RemoteKey(""),
                         filters: List[Filter] = List(),
                         debug: Boolean = false,
+                        batchMode: Boolean = false,
                         source: File)
diff --git a/storage-api/src/main/scala/net/kemitix/thorp/storage/api/StorageService.scala b/storage-api/src/main/scala/net/kemitix/thorp/storage/api/StorageService.scala
index a21d830..d4f9595 100644
--- a/storage-api/src/main/scala/net/kemitix/thorp/storage/api/StorageService.scala
+++ b/storage-api/src/main/scala/net/kemitix/thorp/storage/api/StorageService.scala
@@ -13,6 +13,7 @@ trait StorageService {
 
   def upload(localFile: LocalFile,
              bucket: Bucket,
+             batchMode: Boolean,
              uploadEventListener: UploadEventListener,
              tryCount: Int): IO[StorageQueueEvent]
 
diff --git a/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ClientCopier.scala b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/Copier.scala
similarity index 95%
rename from storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ClientCopier.scala
rename to storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/Copier.scala
index 008b9aa..0d64b5d 100644
--- a/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ClientCopier.scala
+++ b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/Copier.scala
@@ -6,7 +6,7 @@ import com.amazonaws.services.s3.model.CopyObjectRequest
 import net.kemitix.thorp.domain.StorageQueueEvent.CopyQueueEvent
 import net.kemitix.thorp.domain._
 
-class S3ClientCopier(amazonS3: AmazonS3) {
+class Copier(amazonS3: AmazonS3) {
 
   def copy(bucket: Bucket,
            sourceKey: RemoteKey,
diff --git a/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ClientDeleter.scala b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/Deleter.scala
similarity index 93%
rename from storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ClientDeleter.scala
rename to storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/Deleter.scala
index fd26f43..7faeaeb 100644
--- a/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ClientDeleter.scala
+++ b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/Deleter.scala
@@ -6,7 +6,7 @@ import com.amazonaws.services.s3.model.DeleteObjectRequest
 import net.kemitix.thorp.domain.StorageQueueEvent.DeleteQueueEvent
 import net.kemitix.thorp.domain.{Bucket, RemoteKey}
 
-class S3ClientDeleter(amazonS3: AmazonS3) {
+class Deleter(amazonS3: AmazonS3) {
 
   def delete(bucket: Bucket,
              remoteKey: RemoteKey): IO[DeleteQueueEvent] =
diff --git a/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ClientObjectLister.scala b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/Lister.scala
similarity index 97%
rename from storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ClientObjectLister.scala
rename to storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/Lister.scala
index 3556079..772e887 100644
--- a/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3ClientObjectLister.scala
+++ b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/Lister.scala
@@ -12,7 +12,7 @@ import net.kemitix.thorp.storage.aws.S3ObjectsByKey.byKey
 import scala.collection.JavaConverters._
 import scala.util.Try
 
-class S3ClientObjectLister(amazonS3: AmazonS3) {
+class Lister(amazonS3: AmazonS3) {
 
   def listObjects(bucket: Bucket,
                   prefix: RemoteKey): EitherT[IO, String, S3ObjectsData] = {
diff --git a/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3StorageService.scala b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3StorageService.scala
index 187e79e..887ae90 100644
--- a/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3StorageService.scala
+++ b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/S3StorageService.scala
@@ -12,10 +12,10 @@ class S3StorageService(amazonS3Client: => AmazonS3,
                        amazonS3TransferManager: => TransferManager)
   extends StorageService {
 
-  lazy val objectLister = new S3ClientObjectLister(amazonS3Client)
-  lazy val copier = new S3ClientCopier(amazonS3Client)
+  lazy val objectLister = new Lister(amazonS3Client)
+  lazy val copier = new Copier(amazonS3Client)
   lazy val uploader = new Uploader(amazonS3TransferManager)
-  lazy val deleter = new S3ClientDeleter(amazonS3Client)
+  lazy val deleter = new Deleter(amazonS3Client)
 
   override def listObjects(bucket: Bucket,
                            prefix: RemoteKey): EitherT[IO, String, S3ObjectsData] =
@@ -29,9 +29,10 @@ class S3StorageService(amazonS3Client: => AmazonS3,
 
   override def upload(localFile: LocalFile,
                       bucket: Bucket,
+                      batchMode: Boolean,
                       uploadEventListener: UploadEventListener,
                       tryCount: Int): IO[StorageQueueEvent] =
-    uploader.upload(localFile, bucket, uploadEventListener, 1)
+    uploader.upload(localFile, bucket, batchMode, uploadEventListener, 1)
 
   override def delete(bucket: Bucket,
                       remoteKey: RemoteKey): IO[StorageQueueEvent] =
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
index 064c942..3ea4dee 100644
--- 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
@@ -1,6 +1,5 @@
 package net.kemitix.thorp.storage.aws
 
-import cats.effect.IO
 import com.amazonaws.services.s3.transfer.{TransferManager, TransferManagerBuilder}
 import com.amazonaws.services.s3.{AmazonS3, AmazonS3ClientBuilder}
 import net.kemitix.thorp.storage.api.StorageService
@@ -11,11 +10,9 @@ object S3StorageServiceBuilder {
                     amazonS3TransferManager: TransferManager): StorageService =
     new S3StorageService(amazonS3Client, amazonS3TransferManager)
 
-  def defaultStorageService: IO[StorageService] =
-    IO {
-      createService(
-        AmazonS3ClientBuilder.defaultClient,
-        TransferManagerBuilder.defaultTransferManager)
-    }
+  lazy val defaultStorageService: StorageService =
+    createService(
+      AmazonS3ClientBuilder.defaultClient,
+      TransferManagerBuilder.defaultTransferManager)
 
 }
diff --git a/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/Uploader.scala b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/Uploader.scala
index c81aaf2..cf88bd3 100644
--- a/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/Uploader.scala
+++ b/storage-aws/src/main/scala/net/kemitix/thorp/storage/aws/Uploader.scala
@@ -15,10 +15,11 @@ class Uploader(transferManager: => AmazonTransferManager) {
 
   def upload(localFile: LocalFile,
              bucket: Bucket,
+             batchMode: Boolean,
              uploadEventListener: UploadEventListener,
              tryCount: Int): IO[StorageQueueEvent] =
     for {
-      upload <- transfer(localFile, bucket, uploadEventListener)
+      upload <- transfer(localFile, bucket, batchMode, uploadEventListener)
       action = upload match {
         case Right(r) => UploadQueueEvent(RemoteKey(r.getKey), MD5Hash(r.getETag))
         case Left(e) => ErrorQueueEvent(localFile.remoteKey, e)
@@ -27,10 +28,11 @@ class Uploader(transferManager: => AmazonTransferManager) {
 
   private def transfer(localFile: LocalFile,
                        bucket: Bucket,
+                       batchMode: Boolean,
                        uploadEventListener: UploadEventListener,
                       ): IO[Either[Throwable, UploadResult]] = {
     val listener: ProgressListener = progressListener(uploadEventListener)
-    val putObjectRequest = request(localFile, bucket, listener)
+    val putObjectRequest = request(localFile, bucket, batchMode, listener)
     IO {
       Try(transferManager.upload(putObjectRequest))
         .map(_.waitForUploadResult)
@@ -38,12 +40,16 @@ class Uploader(transferManager: => AmazonTransferManager) {
     }
   }
 
-  private def request(localFile: LocalFile, bucket: Bucket, listener: ProgressListener): PutObjectRequest = {
+  private def request(localFile: LocalFile,
+                      bucket: Bucket,
+                      batchMode: Boolean,
+                      listener: ProgressListener): PutObjectRequest = {
     val metadata = new ObjectMetadata()
     localFile.md5base64.foreach(metadata.setContentMD5)
-    new PutObjectRequest(bucket.name, localFile.remoteKey.key, localFile.file)
+    val request = new PutObjectRequest(bucket.name, localFile.remoteKey.key, localFile.file)
       .withMetadata(metadata)
-      .withGeneralProgressListener(listener)
+    if (batchMode) request
+    else request.withGeneralProgressListener(listener)
   }
 
   private def progressListener(uploadEventListener: UploadEventListener) =
diff --git a/storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/StorageServiceSuite.scala b/storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/StorageServiceSuite.scala
index 04ecdff..5b53f3a 100644
--- a/storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/StorageServiceSuite.scala
+++ b/storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/StorageServiceSuite.scala
@@ -102,6 +102,8 @@ class StorageServiceSuite
     Map("md5" -> hash)
   }
 
+  val batchMode: Boolean = true
+
   describe("upload") {
 
     describe("when uploading a file") {
@@ -127,7 +129,7 @@ class StorageServiceSuite
         pending
         //FIXME: works okay on its own, but fails when run with others
         val expected = UploadQueueEvent(remoteKey, Root.hash)
-        val result = storageService.upload(localFile, bucket, uploadEventListener, 1)
+        val result = storageService.upload(localFile, bucket, batchMode, uploadEventListener, 1)
         assertResult(expected)(result)
       }
     }
diff --git a/storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/UploaderSuite.scala b/storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/UploaderSuite.scala
index 2d4c6fd..5265187 100644
--- a/storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/UploaderSuite.scala
+++ b/storage-aws/src/test/scala/net/kemitix/thorp/storage/aws/UploaderSuite.scala
@@ -27,6 +27,8 @@ class UploaderSuite
       "md5" -> hash
     )
 
+  val batchMode: Boolean = true
+
   describe("S3ClientMultiPartTransferManagerSuite") {
     describe("upload") {
       pending
@@ -43,7 +45,7 @@ class UploaderSuite
       val uploader = new Uploader(amazonS3TransferManager)
       it("should upload") {
         val expected = UploadQueueEvent(returnedKey, returnedHash)
-        val result = uploader.upload(bigFile, config.bucket, uploadEventListener, 1)
+        val result = uploader.upload(bigFile, config.bucket, batchMode, uploadEventListener, 1)
         assertResult(expected)(result)
       }
     }