International Journal of Scientific and Research Publication (IJSRP)
Cloud computing is a promising technology able to strongly modify the way computing and storage resources will be accessed in the near future. Cloud systems offer services at three different levels: Infrastructure-as-a-Service (IaaS), Platform-as-a-Service (PaaS) and Software-as-a-Service (SaaS). In particular, IaaS clouds provide users with computational resources in the form of Virtual Machine (VM) instances deployed in the provider data center. PaaS and SaaS clouds offer services in terms of specific solution stacks and application software suites performance evaluation of cloud computing.