In other words, by using a RESTful style, with HTTP as the protocol, you get all the benefits of REST. The fact that you're using protobuf as the media type is

In other words, by using a RESTful style, with HTTP as the protocol, you get all the benefits of REST. The fact that you're using protobuf as the media type is irrelevant to the protocol. As for the content negotiation for JSON vs protobuf, that's also defined in the HTTP standard. https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Accept https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Ac...