Critical Chain Project Management (CCPM)

bullet1 Exploit
bullet2 Drum Buffer

bullet3 Enables Acceleration

The drum buffer ensures that your project has the necessary input available for the drum resource to work on, in the event that the drum resource is available early. This should happen 50% of the time with a properly sized capacity constraint buffer. You can think of the capacity constraint buffer as another predecessor to the successor task of the drum buffer; you need both to work on the drum using activity.