Protecting your ASP.NET Web API using OAuth2 and the Windows Azure Access Control Service

The world in which we live evolves at a vast speed. Today, many applications on the Internet expose an API which can be consumed by everyone using a web browser or a mobile application on their smartphone or tablet. How would you build your API if you want these apps to be a full-fledged front-end to your service without compromising security? In this article, I’ll dive into that. We’ll be using OAuth2 and the Windows Azure Access Control Service to secure our API yet provide access to all those apps out there.