Responsibility Assignment Matrix (RAM)
A responsibility assignment matrix (RAM) is a grid that shows the project resources assigned to each work package, used to illustrate the connections between work that needs to be done and project team members.
Explanation
The RAM links the organizational breakdown structure (OBS) with the work breakdown structure (WBS) to ensure that each component of the project scope is assigned to a responsible person or team. It can be developed at various levels of detail — a high-level RAM may define which groups are responsible for WBS components, while a lower-level RAM may designate roles or individuals for specific activities.\n\nThe RACI matrix is the most well-known format of a RAM, but other formats exist. Some organizations use variations such as RASCI (adding a Supportive role) or simpler formats that just indicate primary and secondary responsibility. The key purpose is to clearly define who does what, avoiding gaps or overlaps in responsibility.\n\nThe RAM is created during Plan Resource Management and is used throughout the project. It helps prevent situations where tasks are left unassigned or where multiple people believe they have authority over the same work. It is especially valuable in matrix organizations where team members may have dual reporting relationships.
Key Points
- •Links the WBS to the OBS to assign responsibility
- •The RACI matrix is the most common type of RAM
- •Can be developed at different levels of detail
- •Prevents gaps and overlaps in responsibility assignments
Exam Tip
The RAM is the general concept, and the RACI matrix is one specific format. The exam may use either term — know that RACI is a type of RAM.
Frequently Asked Questions
Related Topics
RACI Matrix
A RACI matrix is a type of responsibility assignment matrix that defines roles as Responsible, Accountable, Consulted, or Informed for each work package or activity.
Resource Breakdown Structure
A resource breakdown structure (RBS) is a hierarchical representation of resources by category and type used to facilitate planning and controlling of project work.
Plan Resource Management
Plan Resource Management is the process of defining how to estimate, acquire, manage, and use team and physical resources for a project.
Work Breakdown Structure (WBS)
A work breakdown structure (WBS) is a hierarchical decomposition of the total scope of work to be carried out by the project team to accomplish the project objectives and create the required deliverables.
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