Cloud computing refers to ICT services that are used over the Internet.

Services Cloud Computing includes: access to software, computing power, storage capacity etc.; where the services have all of the following characteristics: - are delivered from servers of service providers - can be easily scaled up or down (e.g. number of users or change of storage capacity) - can be used on-demand by the user, at least after the initial set up (without human interaction with the service provider) - are paid for, either per user, by capacity used, or they are pre-paid.