I'm not so sure about the criticism of applications being exposed as web services. If you have a system setup where different parts run on different services y

I'm not so sure about the criticism of applications being exposed as web services. If you have a system setup where different parts run on different services you don't want to have to co-ordinate and resync all the applications when their underlying data structures change. Web services solve this by having a agreed contract of communicating between systems, service A knows of a better way of accessing its own data that service B knows of accessing system A's data.