There is a lot of adaption in ASP.NET Web API since it was first released and has been working so hard on developing a lot of new and cool features. One of the great things the ASP.NET team have been working hard on open source development process as a way to collaborate more on the community and validate the features early as well as enable the community to contribute to the development.
CORS or Cross-origin Resource Sharing is a W3C standard that let web pages make requests to a different domain. This standard will relax the same origin-policy that is implemented in web browsers that restricts the calls to the domain of the resource that makes a call.
In the recent ASP.NET Web API roadmap, the intention to support attribute-based routing in ASP.NET Web API.
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