diff --git a/src/Microsoft.AspNet.Authorization/AllowAnonymousAttribute.cs b/src/Microsoft.AspNet.Authorization/AllowAnonymousAttribute.cs
new file mode 100644
index 0000000000..30d0c49444
--- /dev/null
+++ b/src/Microsoft.AspNet.Authorization/AllowAnonymousAttribute.cs
@@ -0,0 +1,12 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System;
+
+namespace Microsoft.AspNet.Authorization
+{
+    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false, Inherited = true)]
+    public class AllowAnonymousAttribute : Attribute, IAllowAnonymous
+    {
+    }
+}
diff --git a/src/Microsoft.AspNet.Authorization/AuthorizationPolicy.cs b/src/Microsoft.AspNet.Authorization/AuthorizationPolicy.cs
index 2d8cf315d4..096caeecd9 100644
--- a/src/Microsoft.AspNet.Authorization/AuthorizationPolicy.cs
+++ b/src/Microsoft.AspNet.Authorization/AuthorizationPolicy.cs
@@ -57,7 +57,7 @@ namespace Microsoft.AspNet.Authorization
             return builder.Build();
         }
 
-        public static AuthorizationPolicy Combine(AuthorizationOptions options, IEnumerable<AuthorizeAttribute> attributes)
+        public static AuthorizationPolicy Combine(AuthorizationOptions options, IEnumerable<IAuthorizeData> attributes)
         {
             if (options == null)
             {
diff --git a/src/Microsoft.AspNet.Authorization/IAllowAnonymous.cs b/src/Microsoft.AspNet.Authorization/IAllowAnonymous.cs
new file mode 100644
index 0000000000..3ba290a989
--- /dev/null
+++ b/src/Microsoft.AspNet.Authorization/IAllowAnonymous.cs
@@ -0,0 +1,9 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+namespace Microsoft.AspNet.Authorization
+{
+    public interface IAllowAnonymous
+    {
+    }
+}