diff --git a/lib/Logitar.EventSourcing/IEventHandler.cs b/lib/Logitar.EventSourcing/IEventHandler.cs
new file mode 100644
index 0000000..abff606
--- /dev/null
+++ b/lib/Logitar.EventSourcing/IEventHandler.cs
@@ -0,0 +1,16 @@
+namespace Logitar.EventSourcing;
+
+/// <summary>
+/// Represents a handler for a specific event.
+/// </summary>
+/// <typeparam name="TEvent">The type of the event.</typeparam>
+public interface IEventHandler<TEvent> where TEvent : IEvent
+{
+  /// <summary>
+  /// Handles the specified event.
+  /// </summary>
+  /// <param name="event">The event to handle.</param>
+  /// <param name="cancellationToken">The cancellation token.</param>
+  /// <returns>The asynchronous operation.</returns>
+  Task HandleAsync(TEvent @event, CancellationToken cancellationToken = default);
+}