What is the difference between Ias , Paas and Saas?

Hi Saurabh,

Most precisely you can differ them in the following way :
**Saas(Software as Service , CONSUME) : Application(Packed Software) + Platform + Infrastrcture.
Example : Salesforce.com(CRM) Net-Suite (ERP)
G-mail (Email)

**Paas(Platform as Service , BUILD & DEPLOY) : Platform(Windows , Linux) + Infrastrcture.
Example : Force.com (Salesforce.com)
Google App Engine.
Microsoft Azure.

**Iaas(Infrastrcture as Service) : Infrastrcture(Servers , Storage , Network).
Example : Amazon Web Services.
Thanks.