A server-side skeleton is a piece of code that sits on the service side of a consumer / producer relationship. The code is responsible for invoking procedure implementations, demarshalling objects and returning results. The skeleton works hand-in-hand with a client-side stub. In many modern day architectures, stubs and skeletons are produced automatically by an application server or SOAP server based on an interface definition provided by the programmer using a platform language or an interface definition language such as WSDL.