infrastructure as a service Cloud infrastructure services, also known as "infrastructure as a service" (IaaS), deliver computer infrastructure ‐ typically a platform virtualisation environment ‐ as a service, along with raw (block) storage and networking. Rather than purchasing servers, software, data-center space or network equipment, clients instead buy those resources as a fully outsourced service. Suppliers typically bill such services on a utility computing basis; the amount of resources consumed (and therefore the cost) will typically reflect the level of activity. (Excerpt from Wikipedia article: Infrastructure as a service) 2 2 0.1 50 1 50 http://www.ariadne.ac.uk/sites/all/datacharts/hc/15865-chart-wp.html