In the world of competition, customer's disloyalty, globalization and uncertainity deploying ERP solutions is not only necessary but also mandatory. On premise ERP is associated with lots of overhead and requires spending of money and time. SAAS based ERP has many advantages which makes it the right choice for the manufacturing industries whose main job is manufacturing and not information management. This paper focuses on the SAAS based ERP, its advantages and disadvantages. It also covers three case studies of three manufacturing industries and shows the benefits of the implementation of the Cloud based ERP.