So what happens when a company is brave enough to introduce Scrum into a CMMI:5 environment

Here's what Jeff found:

- Productivity doubled in less than six months reducing total project costs by 50%.

- Defects were reduced by 40% in all Scrum projects (despite the fact this company already had one of the lowest defect rates in the world.)

- Planning costs were reduced by about 80%.

- User satisfaction and developer satisfaction were much higher than comparable waterfall implementations.

- Projects were linearly scalable, something never seen before. The productivity of individual developers remains the same as the project increases in size.

Extracted From - http://www.richard-banks.org/2007/09/agile-vs-cmmi-comparison.html