In July 2010, Rackspace Hosting and NASA jointly launched an open-supply cloud-software initiative generally known as OpenStack. The OpenStack project meant to assist organizations providing cloud-computing companies operating on normal hardware. The early code got here from NASA’s Nebula platform as well as from Rackspace’s Cloud Files platform. As an open-supply providing and along with other open-source solutions similar to CloudStack, Ganeti, and OpenNebula, it has attracted attention by several key communities. Several studies aim at comparing these open source choices primarily based on a set of criteria. In early 2008, NASA’s Nebula, enhanced within the RESERVOIR European Commission-funded project, …