I'm new to the Restful architectural style and I'm just wondering if it's a
must to include version number in the Restful API calls e.g.
/v01/users/{user}. It makes perfect sense to me that we should to support
old and new APIs without too much impact to the client but then, I have used
Amazon S3, Google GData and one of them have version number included in the
Rest API. Why is that?Thanks dev
