Large enterprises looking for ways to modernize and migrate a portfolio of business applications to cloud will need to adopt a methodical approach. The approach should give enterprises ways to build a pipeline of applications suitable for infrastructure-as-a-service (IaaS), platform-as-a-service (PaaS) or software-as-a-service (SaaS) types of cloud enablement.

The approach should also provide an ability to decide on an appropriate cloud deployment model: public, private or hybrid. Of these, the IaaS  is the quick route for enterprises looking at cloud enablement for moving towards an OPEX model for lower cost of operations. The success of IaaS in public and private cloud deployments and the associated cost savings have already transformed the operations of many data centers.

More details and a chart that explains it at..

via Four steps to identify and relocate an application portfolio to the cloud | Thoughts on Cloud Blog.