Hypermedia can be domain-specific, which already includes a lot of knowledge about data and operations. In case of HTML client needs to know the semantics of al

Hypermedia can be domain-specific, which already includes a lot of knowledge about data and operations. In case of HTML client needs to know the semantics of all HTML tags and understand how forms work. JSON-based RMM level 3 API can require knowledge of the schema of domain model and logical names of operations, leaving a lot of business logic to server, e.g. availability of certain operations in current security context. Client can render a button based on whether an operation with given name is mentioned in response or not instead of checking user roles etc.