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Cloud computing relates to the bunch of services that are provided to the customers on lease, by the servers located at different sites over the internet. The servers have pool of resources that can be scaled up and down on the basis of requirement. This results into communication and computation over the network. Divisible load theory has become popular during the past two decades. Based on divisible load theory the computations and communications can be divided into some arbitrarily independent parts and each part can be processed independently by a processor. The fraction of load must be allocated the processors based on some priorities. Analytical Hierarchy Process(AHP) is a multi-criteria based technique used for assigning priorities to the processors. Existing approach can handle the priority of processors using Eigen Value method of Analytical Hierarchy Process. The proposed model works on Geometric mean method of Analytical Hierarchy Process in order to improve parameters such as makespan, average response time and average waiting time.

Cloud computing is a new trend of computing paradigm that provides a set of scalable resources on demand. However, it also being a target of cyber attacks and creates risk for data privacy and protection. An Identity Management System (IDM) supports the management of multiple digital identities for authentication and authorization. This paper reviews various identity management frameworks that help making Cloud environment more secure.

Cloud computing provides an environment, where a large pool of systems are connected in networks (i.e., private or public), to provide dynamically scalable infrastructure for storage of application, data and file. Resource allocation is a way to assign resources to the needed applications. Cloud service providers use lease manager for better resource allocation. Haizea is a lease manager that takes lease request and make scheduling decision. We describe cloud computing and its properties, different leases in Haizea and scheduling of resources in Haizea.