Responsible, accountable, consulted, and informed matrix

Responsible, accountable, consulted, and informed matrix (RACI matrix) is a tool used to identify the responsibilities of roles or team members and the activities or deliverables in which they will participate, by being responsible (doing the work), accountable (approving the results), consulted (providing input) or informed of the completed item after it has been completed.

Definitions

According to the BABOK Guide (3rd edition),

Responsible, accountable, consulted, and informed matrix (RACI matrix). A tool used to identify the responsibilities of roles or team members and the activities or deliverables in which they will participate, by being responsible (doing the work), accountable (approving the results), consulted (providing input) or informed of the completed item after it has been completed.