- Responsible: The individuals or groups who perform the task. They are responsible for getting the work done. - Accountable: The person who is ultimately answerable for the task's completion. They hold the authority to make decisions and ensure the task is done. - Consulted: These are the people who provide input and feedback on the task. They are usually subject matter experts. - Informed: Those who need to be kept updated on the task's progress. They do not contribute to the task but are kept in the loop.