This implementation standard provides a standard based solution to serve digital maps using predefined image tiles. The WMTS standard complements the existing Web Map Service standard of the OGC. The WMTS standard offers a standardized approach to declaring the images which a client can request from a server, enabling a single type of client to be developed for all servers.
Request For Comment (RFC)
OGC Seeks Public Comment on Candidate OGC SensorThings API Extension: WebSub Asynchronous Messaging Standard