The focus of the research is multitenancy, a fundamental design approach that can dramatically help improve the manageability of SaaS applications. In this book we define multitenancy,explain its benefits, and demonstrate why metadata driven architectures are the premier choice for implementing it. The book aims to show how this architectural approach pays dividends to both application providers and users. This book is a authoritative and accessible guide for the reader to understand the basic concepts of Cloud Computing and will lead a reader through a process of developing a design and implementing the architecture in real time. ----------Book will help the cloud "newcomers" to replicate the solution and know the "CLOUD" better.