In this article we are going to see how to make use of the Access Control Service in Windows Azure to create an Authentication Mechanism using Google credentials for our ASP.Net Azure Web Application using Visual Studio 2010 and Windows Azure Management Portal.
Access Control Service in Windows Azure is a simplified process of providing Federated Authentication based on some rules for the application or on providing Claim based Authentication for WCF Rest Services. Microsoft Provides Access Control System with Windows Azure Appfabric with authentication and authorization for variety of applications like Web Applications and Web Services.[more]
The difference is that in a Web application we have a user interface login page where authentication can be done, and in web service we will not have a login page. As of now Microsoft Windows Azure provides Identity Providers like Google, Facebook, Windows Live ID and Yahoo to authenticate the users with their respective credentials.