It often seems that a lean, agile development environment will always be at odds with the structure and constraints of the PMO. Rick Freedman described the situation well in a recent blog post:
"Many firms have committed so completely to PMBOK process flows and CMM best practices that many of the core concepts of agile development, such as "barely sufficient" documentation and change-friendliness, seem like heresy. In fact, I've had people in my Agile Project Management classes tell me that their perception of agile is that the key message is "everything you know about project management is wrong."[i]

