Difference between VM role(paas) and VM(Iaas)

The biggest difference is One is PaaS , Another is IaaS,

For Example : you can specify the instance number of Load Balance just by simploy setting the number in the configuration of VM Role.

So, that is the PaaS adventages. But I thought it is part of PaaS, Because as MS announced , User should be reponsable for the system updating of VM image. I think it should  be done by  Vendor.

See Also: http://www.c-sharpcorner.com/UploadFile/aravindbenator/differences-between-vm-role-platform-as-a-service-and-vm/

http://msdn.microsoft.com/en-us/library/gg432976.aspx

http://blogs.msdn.com/b/plankytronixx/archive/2012/06/08/the-difference-between-azure-vms-and-azure-vm-role.aspx

http://blog.toddysm.com/2011/02/how-to-deploy-windows-azure-vm-role.html

http://msdn.microsoft.com/en-us/library/gg433107.aspx