WCF REST Vs Web API

1. SOA
2. WCF REST Vs Web API

WCF REST	Web API
To use WCF as WCF Rest service you have to enable webHttpBindings.	This is the new framework for building HTTP services with easy and simple way.
It support HTTP GET and POST verbs by [WebGet] and [WebInvoke] attributes respectively.	Web API is open source an ideal platform for building REST-ful services over the .NET Framework.
To enable other HTTP verbs you have to do some configuration in IIS to accept request of that particular verb on .svc files	Unlike WCF Rest service, it use the full featues of HTTP (like URIs, request/response headers, caching, versioning, various content formats)
Passing data through parameters using a WebGet needs configuration. The UriTemplate must be specified	It also supports the MVC features such as routing, controllers, action results, filter, model binders, IOC container or dependency injection, unit testing that makes it more simple and robust.
It support XML, JSON and ATOM data format.	It can be hosted with in the application or on IIS. It is light weight architecture and good for devices which have limited bandwidth like smart phones. Responses are formatted by Web API’s MediaTypeFormatter into JSON, XML or whatever format you want to add as a MediaTypeFormatter.