The Semantic Web is already here, but is somehow different from the original vision that was already present in Tim Berners-Lee Design Issues of Web Architecture.
It is a humbler, fragmented but also more pragmatic semantic web. These are some of the pieces conforming this “small-case” semantic web, as I am trying to put them together in a chapter for a future book about RESTful design:
A collection of loosely coupled sometimes redundant technologies and specifications built on top of the HTTP protocol that grant access to a increasingly web of linked data:
Working Memory 