I think you would use protobuff, XML, JSON, etc. The idea would be that you encapsulate all of your services behind a gateway of sorts. External clients would i

I think you would use protobuff, XML, JSON, etc. The idea would be that you encapsulate all of your services behind a gateway of sorts. External clients would interact with the gateway only, and internal services would just provide a one size fits all response. This way front end teams are responsible for their clients and there is very little change internally because every base is covered in the general purpose response.