We've got a bunch of data that we'd like to expose to the world hosted on an asp-net.mvc website. I'd like to ensure that we deliver it using technology that is easy for end developers to implement and not tied to any particular platform, rather than using technology that is unpopular/incompatible with developers.

The kind of requests we expect are mainly to retrieve search results (not many parameters), but down the like we'd like to be able to provide catalogue lookups and the like, which may be more complex.

Bearing this in mind, what is the preferred means of doing this?