Scaling Agile across the Enterprise attracts a lot of attention these days. There are a number of models suggesting ways to organize Agile development inside a sizable organization with a lot of teams. I suspect that all of these models share the same basic flaw—that you can do something the same way across a large enterprise. Even if your policy manual says exactly how to do something, people are people and there will be variations in understanding and execution. And how does a team self-organize in a prescribed manner?
Beyond that, there’s the problem of getting from current state to a future state that resembles the model. It does not work to “install” a new way of working across a large system composed of people and their interactions. Some people suggest starting the transformation with management, as that’s the “highest leverage point” and the “system’s major influencers.” Others suggest starting with the teams, because without competence at building reliable software (or other systems) in short cycles of small steps, you’re not going to get the benefits of Agile Software Development. I don’t think that either of these starting points work.
“When we try to pick out anything by itself, we find it hitched to everything else in the Universe” — John Muir