Web services is a collection of technologies that client-server model use also to exchange information. The Web services uses XML as the message wrapper to exchange information but the XML is always verbose and hence incurs latency in the communication. This paper used UML to model the Web services exchange for client-server applications. UML notations were used to offer the interactions between the objects and the elements of the Web services and how the information is compressed for the exchange. The analysis and the design of the requirements will be useful to Web services and cloud computing researchers and developers.