How would a U-form organization be different if it switched to an M-form organization?
Essentially, this change would result in the decentralization of the organization. After such a change, the organization would be controlled much less centrally than it had been before. The various new divisions would be likely to be more "nimble" as they would have more autonomy and less need to coordinate with central management. They might also be better managed as their management would now be made up of people who were more closely connected to the division and therefore knew more about it. On the other hand, it might be harder for the organization as a whole to be integrated. The various divisions would be less connected to one another and might not work together as well as they previously had.