Sumit Gupta

Hi Shyam, It's an apt question - lets explain it through a scenario -- Let's say there is an organisation which is a small having a small team and is least interested in investing the infrastructure required for the setting up the solution - Dynamics CRM - in that case, they simply opt in for a package of office 365 along with the needed number of licenses and this all set up is managed by Microsoft simply its something like "Software as a Service" and the best part about the same is it's being hosted over Azure Cloud. So everything managed by the professionals, you have the access of the same through internet both in the organisation and out side the organisation. But now lets take up another scenario where in there is an organisation who have all the required setup and things and wants to play around a lot of database things can say they want a confined access only in the organisation or lets say they needed to integrate a lot of applications so the opt for the On-Premise installation and if they want to offer the access globally over internet then the same has to be upgrade with IFD installation. Moreover - Microsoft is giving more emphasis over On-Line versions due to its ease of availability to get integrated with Office 365 and similar features.