The large scale IaaS systems could store virtual appliances in several repositories. The deployment time could heavily vary depending on the connection properties of the repository storing the appliance. A virtual appliance is a virtual machine image designed to run on a virtualization platform i.e. Virtual Box, Xen, VMware Workstation. Virtual appliance delivery requires the modification of the underlying IaaS systems. IaaS is the virtual delivery of computing resources in the form of

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... networking, and storage services This concept will reduce the variance in deployment time by introducing the concept of online active repositories and appliance optimization. To provide efficient delivery time in IaaS and to increase the efficiency of IaaS (Infra structure as a service) system To calculate the delivery time when deployed it in the virtualized platform Combining the both online and manual repositories for calculating the delivery time To construct the appliance in online using various online repositories The constructed appliance is deployed in the virtualized platform (using virtual box). And the appliance is optimized for increasing the efficiency and decreasing the delivery time. The delivery time of the online appliance is compared with the appliance which has been created manually.