diff --git a/CHANGELOG b/CHANGELOG
index 8a25f54..661abb1 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -4,7 +4,7 @@ CHANGELOG
 0.7.0
 -----
 
-* 
+* Add `Result`
 
 0.6.0
 -----
diff --git a/src/main/java/net/kemitix/mon/result/Err.java b/src/main/java/net/kemitix/mon/result/Err.java
new file mode 100644
index 0000000..e454ade
--- /dev/null
+++ b/src/main/java/net/kemitix/mon/result/Err.java
@@ -0,0 +1,58 @@
+/**
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Paul Campbell
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+ * and associated documentation files (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies
+ * or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
+ * AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+package net.kemitix.mon.result;
+
+import lombok.RequiredArgsConstructor;
+
+import java.util.function.Consumer;
+import java.util.function.Function;
+
+/**
+ * An Error Result.
+ *
+ * @param <T> the type of the value in the Result if it has been a success
+ */
+@RequiredArgsConstructor
+class Err<T> implements Result<T> {
+
+    private final Throwable error;
+
+    @Override
+    public boolean isError() {
+        return true;
+    }
+
+    @Override
+    public boolean isOkay() {
+        return false;
+    }
+
+    @Override
+    public <R> Result<R> flatMap(final Function<T, Result<R>> f) {
+        return Result.error(error);
+    }
+
+    @Override
+    public void match(final Consumer<T> onSuccess, final Consumer<Throwable> onError) {
+        onError.accept(error);
+    }
+}
diff --git a/src/main/java/net/kemitix/mon/result/Result.java b/src/main/java/net/kemitix/mon/result/Result.java
new file mode 100644
index 0000000..ff36be4
--- /dev/null
+++ b/src/main/java/net/kemitix/mon/result/Result.java
@@ -0,0 +1,90 @@
+/**
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Paul Campbell
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+ * and associated documentation files (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies
+ * or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
+ * AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+package net.kemitix.mon.result;
+
+import java.util.function.Consumer;
+import java.util.function.Function;
+
+/**
+ * An Either type for holding a result or an error (exception).
+ *
+ * @param <T> the type of the result when a success
+ *
+ * @author Paul Campbell (pcampbell@kemitix.net)
+ */
+public interface Result<T> {
+
+    /**
+     * Create a Result for a success.
+     *
+     * @param value the value
+     * @param <T> the type of the value
+     * @return a successful Result
+     */
+    static <T> Result<T> ok(final T value) {
+        return new Success<T>(value);
+    }
+
+    /**
+     * Create a Result for an error.
+     *
+     * @param error the error (exception)
+     * @param <T> the type had the result been a success
+     * @return an error Result
+     */
+    static <T> Result<T> error(final Throwable error) {
+        return new Err<T>(error);
+    }
+
+    /**
+     * Checks of the Result is an error.
+     *
+     * @return true if the Result is an error.
+     */
+    boolean isError();
+
+    /**
+     * Checks of the Result is a success.
+     *
+     * @return true if the Result is a success.
+     */
+    boolean isOkay();
+
+    /**
+     * Returns a new Result consisting of the result of applying the function to the contents of the Result.
+     *
+     * @param f   the mapping function the produces a Result
+     * @param <R> the type of the result of the mapping function
+     *
+     * @return a Result
+     */
+    <R> Result<R> flatMap(Function<T, Result<R>> f);
+
+    /**
+     * Matches the Result, either success or error, and supplies the appropriate Consumer with the value or error.
+     *
+     * @param onSuccess the Consumer to pass the value of a successful Result to
+     * @param onError the Consumer to pass the error from an error Result to
+     */
+    void match(Consumer<T> onSuccess, Consumer<Throwable> onError);
+
+}
diff --git a/src/main/java/net/kemitix/mon/result/Success.java b/src/main/java/net/kemitix/mon/result/Success.java
new file mode 100644
index 0000000..413d7c5
--- /dev/null
+++ b/src/main/java/net/kemitix/mon/result/Success.java
@@ -0,0 +1,58 @@
+/**
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Paul Campbell
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+ * and associated documentation files (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies
+ * or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
+ * AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+package net.kemitix.mon.result;
+
+import lombok.RequiredArgsConstructor;
+
+import java.util.function.Consumer;
+import java.util.function.Function;
+
+/**
+ * A Successful Result.
+ *
+ * @param <T> the type of the value in the Result
+ */
+@RequiredArgsConstructor
+class Success<T> implements Result<T> {
+
+    private final T value;
+
+    @Override
+    public boolean isError() {
+        return false;
+    }
+
+    @Override
+    public boolean isOkay() {
+        return true;
+    }
+
+    @Override
+    public <R> Result<R> flatMap(final Function<T, Result<R>> f) {
+        return f.apply(value);
+    }
+
+    @Override
+    public void match(final Consumer<T> onSuccess, final Consumer<Throwable> onError) {
+        onSuccess.accept(value);
+    }
+}
diff --git a/src/main/java/net/kemitix/mon/result/package-info.java b/src/main/java/net/kemitix/mon/result/package-info.java
new file mode 100644
index 0000000..55f2926
--- /dev/null
+++ b/src/main/java/net/kemitix/mon/result/package-info.java
@@ -0,0 +1,30 @@
+/**
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Paul Campbell
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+ * and associated documentation files (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies
+ * or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
+ * AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * An experiment in creating something similar to a Type-Alias in Java.
+ *
+ * <p>Ideas initially lifted from the Design with Types series at https://fsharpforfunandprofit.com/</p>
+ *
+ * @author Paul Campbell (pcampbell@kemitix.net)
+ */
+
+package net.kemitix.mon.result;
diff --git a/src/test/java/net/kemitix/mon/ResultTest.java b/src/test/java/net/kemitix/mon/ResultTest.java
new file mode 100644
index 0000000..0a66d71
--- /dev/null
+++ b/src/test/java/net/kemitix/mon/ResultTest.java
@@ -0,0 +1,106 @@
+package net.kemitix.mon;
+
+import net.kemitix.mon.result.Result;
+import org.assertj.core.api.WithAssertions;
+import org.junit.Test;
+
+public class ResultTest implements WithAssertions {
+
+    @Test
+    public void createSuccess_isSuccess() {
+        //when
+        final Result<String> result = Result.ok("good");
+        //then
+        assertThat(result.isOkay()).isTrue();
+    }
+
+    @Test
+    public void createSuccess_isNotError() {
+        //when
+        final Result<String> result = Result.ok("good");
+        //then
+        assertThat(result.isError()).isFalse();
+    }
+
+    @Test
+    public void createSuccess_matchSuccess() {
+        //given
+        final Result<String> result = Result.ok("good");
+        //then
+        result.match(
+                success -> assertThat(success).isEqualTo("good"),
+                error -> fail("not an error")
+        );
+    }
+
+    @Test
+    public void createError_isError() {
+        //when
+        final Result<String> result = Result.error(new Exception());
+        //then
+        assertThat(result.isOkay()).isFalse();
+    }
+
+    @Test
+    public void createError_isNotSuccess() {
+        //when
+        final Result<String> result = Result.error(new Exception());
+        //then
+        assertThat(result.isError()).isTrue();
+    }
+
+    @Test
+    public void createError_matchError() {
+        //given
+        final Result<Object> result = Result.error(new Exception("bad"));
+        //then
+        result.match(
+                success -> fail("not a success"),
+                error -> assertThat(error.getMessage()).isEqualTo("bad")
+        );
+    }
+
+    @Test
+    public void successFlatMap_success_isSuccess() {
+        //given
+        final Result<String> result = Result.ok("good");
+        //when
+        final Result<String> flatMap = result.flatMap(v -> Result.ok(v.toUpperCase()));
+        //then
+        assertThat(flatMap.isOkay()).isTrue();
+        flatMap.match(
+                success -> assertThat(success).isEqualTo("GOOD"),
+                error -> fail("not an error")
+        );
+    }
+
+    @Test
+    public void successFlatMap_error_isError() {
+        //given
+        final Result<String> result = Result.ok("good");
+        //when
+        final Result<String> flatMap = result.flatMap(v -> Result.error(new Exception("bad flat map")));
+        //then
+        assertThat(flatMap.isOkay()).isFalse();
+    }
+
+    @Test
+    public void errorFlatMap_success_isError() {
+        //given
+        final Result<String> result = Result.error(new Exception("bad"));
+        //when
+        final Result<String> flatMap = result.flatMap(v -> Result.ok(v.toUpperCase()));
+        //then
+        assertThat(flatMap.isError()).isTrue();
+    }
+
+    @Test
+    public void errorFlatMap_error_isError() {
+        //given
+        final Result<String> result = Result.error(new Exception("bad"));
+        //when
+        final Result<String> flatMap = result.flatMap(v -> Result.error(new Exception("bad flat map")));
+        //then
+        assertThat(flatMap.isError()).isTrue();
+    }
+}
\ No newline at end of file