The 3 major components of the Cloud
IaaS (Infrastructure as Services)
Providing the IT infrastructure :
- Virtualization, servers, networks, data storages
.
- Installation and autonomous management of its software
PaaS (Platform as Services)
Providing middleware software:
- Database, mobile applications, development platforms ...
- Pre-configured solutions, fully or partially automated management
SaaS (Software as Services)
Providing software applications :
- Application software directly accessible by end-users
- Management, fully automated updates