Cloud Service Models
The various cloud-based services have their own distinct and unique cloud architectures:
- Software as a Service (SaaS) involves software hosted and maintained on internet. With SaaS, users do not have to install the software locally.
- Platform as a Service (PaaS) provides users with application platforms and databases, equivalent to middleware services.
- Infrastructure as a Service (IaaS) provides for infrastructure and hardware such as servers, networks, storage devices, etc. running in the cloud, available to users against a pay per usage basis.
