Resource provisioning is a general technique for handling the resource allocation in cloud environment. Monitoring the system performance and the user request is crucial for efficient cloud resource management. Also in cloud environments, issues such as cost and resource provisioning based on QoS constraints are yet to be addressed. In this paper, the authors present a SLA(Service Level Agreement) - Aware Adaptive (SAA) provisioning method for hybrid workload that employ a flexible determining model. They present advanced cloud infrastructure which maintain proper virtual machine numbers by optimizing resources allocation.