Terms of reference (TOR) define the purpose and structures of a project, committee, meeting, negotiation, or any similar collection of people who have agreed to work together to accomplish a shared goal.[1][2]
Terms of reference show how the object in question will be defined, developed, and verified. They should also provide a documented basis for making future decisions and for confirming or developing a common understanding of the scope among stakeholders. In order to meet these criteria, success factors/risks and constraints are fundamental. They define the:
TORs could include:[3]
Although the terms of reference of a project are sometimes referred to as the project charter,[4] there are significant differences between the two. This article describes a TOR containing detailed definitions, while a project charter has high-level requirements, assumptions, constraints and descriptions as well as a budget summary without detail, and a milestone-only schedule.[5]
The diagnosis phase should end with the drafting of a Terms of Reference (TOR). The TOR is a detailed written description of the specifications for the evaluation.