International Journal of Research Review in Engineering Science & Technology (IJRREST)
Cloud computing is a subscription based service where the authors can obtain networked storage space and computer resources. The cloud makes it possible for them to access information from anywhere at any time while their traditional computer setup requires them to be in the same location as their data storage devices. They need a cloud service provider which provides specific services giving their users less or more control over their cloud services depending on their requirement. Those offered services can be infrastructure, platform and software and the cloud service providers can charge as per the subscription services provided by them. To test the cloud infrastructure quality concerns, scalability, dynamic configuration and cloud based software system; various techniques and tools are commercially available.