diff --git a/src/Ardalis.SharedKernel/Ardalis.SharedKernel.csproj b/src/Ardalis.SharedKernel/Ardalis.SharedKernel.csproj
index 7b1d7e6..4b0ceb3 100644
--- a/src/Ardalis.SharedKernel/Ardalis.SharedKernel.csproj
+++ b/src/Ardalis.SharedKernel/Ardalis.SharedKernel.csproj
@@ -13,9 +13,9 @@
     <RepositoryUrl>https://github.com/ardalis/Ardalis.SharedKernel</RepositoryUrl>
     <PackageTags>DDD;Shared Kernel;SharedKernel;Domain-Driven Design;Repository;Specification;ValueObject;Value Object;Ardalis;Clean;Clean Architecture;Clean Architecture Template</PackageTags>
     <PackageIcon>icon.png</PackageIcon>
-    <Version>1.1.0</Version>
+    <Version>1.2.0</Version>
     <PackageReleaseNotes>
-      * Add MediatR Domain Event Dispatcher
+      * Add Commands, Queries, and Handler interfaces
     </PackageReleaseNotes>
     <PublishRepositoryUrl>true</PublishRepositoryUrl>
     <EmbedUntrackedSources>true</EmbedUntrackedSources>
diff --git a/src/Ardalis.SharedKernel/ICommand.cs b/src/Ardalis.SharedKernel/ICommand.cs
new file mode 100644
index 0000000..7367b2e
--- /dev/null
+++ b/src/Ardalis.SharedKernel/ICommand.cs
@@ -0,0 +1,11 @@
+using MediatR;
+
+namespace Ardalis.SharedKernel;
+
+/// <summary>
+/// Source: https://code-maze.com/cqrs-mediatr-fluentvalidation/
+/// </summary>
+/// <typeparam name="TResponse"></typeparam>
+public interface ICommand<out TResponse> : IRequest<TResponse>
+{
+}
diff --git a/src/Ardalis.SharedKernel/ICommandHandler.cs b/src/Ardalis.SharedKernel/ICommandHandler.cs
new file mode 100644
index 0000000..160925d
--- /dev/null
+++ b/src/Ardalis.SharedKernel/ICommandHandler.cs
@@ -0,0 +1,13 @@
+using MediatR;
+
+namespace Ardalis.SharedKernel;
+
+/// <summary>
+/// Source: https://code-maze.com/cqrs-mediatr-fluentvalidation/
+/// </summary>
+/// <typeparam name="TCommand"></typeparam>
+/// <typeparam name="TResponse"></typeparam>
+public interface ICommandHandler<in TCommand, TResponse> : IRequestHandler<TCommand, TResponse>
+        where TCommand : ICommand<TResponse>
+{
+}
diff --git a/src/Ardalis.SharedKernel/IQuery.cs b/src/Ardalis.SharedKernel/IQuery.cs
new file mode 100644
index 0000000..f9019b9
--- /dev/null
+++ b/src/Ardalis.SharedKernel/IQuery.cs
@@ -0,0 +1,11 @@
+using MediatR;
+
+namespace Ardalis.SharedKernel;
+
+/// <summary>
+/// Source: https://code-maze.com/cqrs-mediatr-fluentvalidation/
+/// </summary>
+/// <typeparam name="TResponse"></typeparam>
+public interface IQuery<out TResponse> : IRequest<TResponse>
+{
+}
diff --git a/src/Ardalis.SharedKernel/IQueryHandler.cs b/src/Ardalis.SharedKernel/IQueryHandler.cs
new file mode 100644
index 0000000..fff209b
--- /dev/null
+++ b/src/Ardalis.SharedKernel/IQueryHandler.cs
@@ -0,0 +1,13 @@
+using MediatR;
+
+namespace Ardalis.SharedKernel;
+
+/// <summary>
+/// Source: https://code-maze.com/cqrs-mediatr-fluentvalidation/
+/// </summary>
+/// <typeparam name="TQuery"></typeparam>
+/// <typeparam name="TResponse"></typeparam>
+public interface IQueryHandler<in TQuery, TResponse> : IRequestHandler<TQuery, TResponse>
+       where TQuery : IQuery<TResponse>
+{
+}