As an enterprise Architect, I like to think in little cubicles.
If you look closely at the TOGAF picture you'll see the cornerstones of an enterprise: Principles, Strategy, Objectives, Drivers, Vision, Goals and Measures even, and on the other hand: Business, Technology, Information Systems, Stakeholders
Missing something there? Well there also are Organisation, Location, Actors and Roles, Processes, Events, Controls, Products, Functions.
Still missing something?
Where's the customer?