A Review on Provisioning of Services in Cloud Computing

Cloud computing has been one of the most profound discoveries of this century. It has posed society with solution to extend computing beyond boundaries within organizations and relook at leveraging outsourced infrastructures for their computational needs. With scale and mass, comes the advantage of flexible infrastructure at reduced costs. At the same time, the complexity of service provisioning has increased exponentially. Many researchers have come up with novel techniques and algorithms in order to maintain Quality of Service (QoS) with reduced provisioning costs. With ever increasing adoption of Cloud services by consumers, demands have multiplied and pose challenges around Service Level Agreement (SLA) measurement and monitoring to maintain QoS. In this paper, a detailed review on some of the state-of-the art of service provisioning techniques and algorithms in cloud computing is presented. First few sections focus on the cloud evolution and taxonomy to bring clarity on expectations from and complexity of Cloud Computing and remaining sections synthesize and summarize different provision techniques, approaches, and models through a comprehensive literature review.