CMM or CMMI, which is more appropriate for a software industry?

It is not easy to improve software quality by relying on conformance to industry standards by continuously upgrading from one standard or model to another standard or model because this exercise is complicated for some software organizations. Many multinational companies, developed internal standards based on the military standards, and then sought to improve the standard even further as their software development processes matured. The software development systems based on these internal, commercial standards, and improved over the years have proved to be good systems. This paper shows how to adopt an efficient, workable system from basic principles that can improve the output of a software organisation by using CMM, CMMI.