Software As A Service (SaaS) | What is SaaS Software? | UBS

Software as a service (SaaS) model is one in which a cloud provider hosts programs and makes them available to end-users over the internet. In this case, an independent software vendor (ISV) may contract with a third-party cloud provider to host the application. Alternatively, in the case of larger companies such as Microsoft, the cloud provider may also be the software provider.