Today there is a rich and diverse choice of software selection available for almost every business domain. These softwares’ have a huge amount of processing capabilities. However, these software applications are like ‘islands of processing systems’ even within an organization and across business boundaries. One of the challenges of modern software development is that the current methods are no longer able to fulfil the requirements for the development of compound systems with multiple and unstable system requirements. When there are more than one system, additional efforts are needed to integrate the systems. When there are more than one group of developers involved, the overall view of the system is bound to be neglected. All these problems can be grouped together as the problems of software development today, viewed from the engineering aspect.

In order to meet the challenges presented by today’s competitive atmosphere, organizations need the ability to solve problems that cannot be solved on its own. Businesses today need a global, an open and distributed computational capability. In other words, the demand is for a large scale, complex and integrated systems.