The Compact Electronics Bay Specification as well as EEB, MEB and TEB ("Thin Electronics Bay") are standard form factors for dual or multi processor motherboards defined by the Server System Infrastructure Forum.

CEB, formerly Corporate Executive Board, now a part of Gartner, was a company providing best practice research, benchmarks, and decision support tools to business leaders in HR, Finance, IT, Marketing, Sales, Customer Service, Strategy, R&D, Procurement, Legal, and Compliance functions globally.