cloud providers & types
the top 3 cloud providers out there are:
in general cloud computing services are categorized into three types.
1) Infrastructure as a Service (IaaS): This service provides the infrastructure like Servers, Operating Systems, Virtual Machines, Networks, and Storage etc on rent basis.
Example: Amazon Web Service, Microsoft Azure
2) Platform as a Service (PaaS): This service is used in developing, testing and maintaining of software. PaaS is same as IaaS but also provides the additional tools like DBMS, BI services etc.
Example: Apprenda, Red Hat OpenShift
3) Software as a Service (SaaS): This service makes the users connect to the applications through Internet on a subscription basis.