Software-as-a-Service (SaaS)

Software-as-a-Service (SaaS) is software that is used over a network without downloading it to a local compute environment. The software application is accessed over the internet from a SaaS provider and run in the provider's predefined compute environment. Each user is a tenant in the provider's multi-tenant shared environment. Some customization of the software may be allowed. However, it is uncommon for the user to have much control over the infrastructure compute architecture, location, or service levels provided.