Apple coined the term "directly responsible individual" (DRI) to refer to the one person with whom the buck stopped on any given project. The idea is that every project is assigned a DRI who is ultimately held accountable for the success (or failure) of that project.They likely won't be the only person working on their assigned project, but it's "up to that person to get it done or find the resources needed."... What's most important is that they're empowered.