Paas and Saas models for BPM space

PaaS is a programmable or programming environment presented as rich internet onlineplatform completewith the application development, data storage and other tools required to run multi-tenanted, massively scalable application where as SaaS delivers the application as subscription service over the internet.

PaaS model is used by ISV to develop their apllication and SaaS model ismore end user oriented in terms of offering the developed application as service to the end user.

BPM offers a collbarative platform for IT and business user to rengineer ,optimize and monitor processes.The SaaS offering with customization to end user needs is better option in terms of BPM because of following reason

• The enduser see a process already mapped as per some industry norms where in he can figure out minor customizations and make it easily acceptable.
  
• The effort required is less both in terms of business user efforts and IT efforts

PaaS is a goof platform offering for develoing ground up application but the utility of PaaS from BPM standpoint is less as processes need to be monitored reengineered and optimized and if all these things has to be developed from scratch the cost is very high even on PaaS. This involves lot of time . SaaS is always a better choice to deploy already built up processes with slight customization with less effort and time.