schema.org, Generic Hypermedia APIs

Finally, some attempts to "properly" define (Service) APIs based on "vocabulary"
of known, shared, concepts.

SOAP web service have significantly delayed optimization of web services,
and now with REST / "Hypemedia" there are attempts to make service more evolve-able and generic.

Full Hierarchy - schema.org

presentation: Generic Hypermedia and Domain-Specific APIs: RESTing in the ALPS @ InfoQ