Service oriented architecture (SOA) is a widespread architecture methodology which consists of assembling a set of services in an interoperable form to satisfy business goals. In general, architectural decisions play a vital role in modelling any software system and so its effect is important throughout the existence of the software. Early evaluation of system requirements and architecture saves time, effort and money. Therefore, by appropriately applying the service oriented architecture principles in structuring and developing the services and using the right implementation of SOA based...