What is “The Cloud?”
“The Cloud” is an all-encompassing term for a virtualized information technology (IT) computing environment in which individuals and businesses work with applications and data stored and maintained on shared machines in a web-based environment, rather than physically located in a user’s location. Google’s popular email system, Gmail, is an example of the cloud, but this is just one model. There are actually three cloud service models — infrastructure as a service, platform as a service, and software as a service — deployed in four types of settings — private, community, public, and hybrid clouds.
Cloud computing is here and virtually every organization is using it in some way, shape, or form. Educating yourself and your people on the opportunities and risks associated with this technology is of the utmost importance. Let’s look at the opportunities presented by cloud computing, managing the risks associated with housing your sensitive data offsite, using virtual computing environments, and vendor management considerations as you explore your cloud options.
Service models Of Cloud computing
. Infrastructure as a service (IaaS) provides access to server hardware, storage, network capacity, and other fundamental computing resources.
. Platform as a service (PaaS) provides access to basic operating software and services to develop and use customer-created software applications.
. Software as a service (SaaS) provides integrated access to a provider’s software applications.
Deployment models Of Cloud computing
. Private cloud is accessible from an intranet, internally hosted, and used by a single organization.
. Community cloud has infrastructure accessible to a specific community.
. Public cloud is accessible from the internet, externally hosted, and used by the general public.
. Hybrid cloud is a combination of two or more clouds.