Furthermore, if you delve into OPP (or any of the HM PAs) you realize quickly that it is these very measures that give you the most valuable information about process performance – enabling you to make course-corrections to your process to improve performance. Lacking that, there is way to understand what needs to be improved!
M&A is the PA that you would use to manage and execute those GP2.8 measures. M&A is simply an infrastructure PA, which is why it is described in the model as a “support” PA. It does not speak at all to “what” to measure, only how to build and execute a measurement infrastructure. M&A must be “fed” by measures that are the result of process execution, so the other process areas are M&As “customer.”
So, IMHO, I stand by my original assertion – GP2.8 exists to help us understand process performance, and measurement is an effective way to do this. The trick, and I fully advocate this, is to keep it light and useful.