Cloud Computing Services ?

There are three different service models that you can subscribe according to business needs:

• Infrastructure as a Service (IaaS)
• Platform as a Service (PaaS)
• Software as a Service (SaaS)

Infrastructure as a Service (IaaS): 

        The most common cloud service is that one offering data storage disks and virtual servers, i.e. infrastructure.Examples of Infrastructure-as-a-Service (IaaS) companies are Amazon,Rackspace. Organizations make use of the unlimited storage potential of the cloud infrastructure.They can expand and shrink their storage space as needed without having to worry about dedicated servers on site. 

 

 Platform as a Service (PaaS):

         Platform as a service, is referred as PaaS, it provides a platform and environment to allow developers to build applications and services. This service is hosted in the cloud and accessed by the users via internet. Companies can run their applications on the cloud service’s platform without having to worry about maintaining hard drives and servers.

If the cloud offers a development platform, and this includes operating system,programming language execution environment, database, and web server, the model is known as Platform-as-a-Service (PaaS). 

 

 Software as a Service (SaaS):

         SaaS or software as a service is a software distribution model in which applications are hosted by a vendor or service provider and made available to customers over a network (internet).It allows people to access the functionality of a particular software without worrying about storage or other issues.