In most of the private cloud implementation scenarios we came across IAAS as the sole way of implementing cloud. In IAAS, the concept of very high scalability, reliability, availability and on demand provisioning is limited to hardware/virtual machines. Though implementing IAAS qualifies an organization to call itself as cloud enabled, there needs to be a PAAS that augments the clouds efficiency to maximize the bang for the buck. It would also propel the organization further up in the cloud maturity index. This paper discusses the various options that exist in making these PAAS implementations and the benefits and drawbacks of using these categories of PAAS. This will also help organizations to make an informed choice of PAAS that meets their requirements.

PAAS Ideal PAAS Platform Custom PAAS Reference Architecture for Applications in Custom PAAS COTS implementations of PAAS