A RACI matrix is a responsibility assignment chart used to clarify roles and decision rights for tasks, deliverables, or processes. The acronym RACI stands for Responsible, Accountable, Consulted, and Informed. It is commonly used in industrial operations, OT/IT projects, and quality or compliance initiatives to reduce ambiguity about who does what and who must be involved.
Core elements of a RACI matrix
A RACI matrix typically appears as a grid, with activities listed on one axis (such as process steps, project tasks, or documents) and roles or functions on the other (such as quality manager, production supervisor, ERP owner, or MES engineer). Each intersection is assigned one or more of the following:
- Responsible (R): The role that performs the work to complete the task or produce the deliverable. There can be multiple responsible roles, but many organizations limit it to reduce confusion.
- Accountable (A): The role that ultimately owns the outcome and ensures the task is completed correctly. Typically exactly one role is accountable for each task or deliverable.
- Consulted (C): Roles that must be consulted before work is done or decisions are made. This is usually a two-way communication, for example between quality, engineering, and production.
- Informed (I): Roles that must be kept informed after decisions are made or work is completed. This is usually one-way communication, such as sending status updates or final reports.
Use in manufacturing and regulated environments
In industrial and regulated settings, a RACI matrix is often used to document and communicate responsibilities for:
- Quality processes such as nonconformance handling, CAPA workflows, FAI reviews, or inspection plans.
- MES, ERP, or PLM projects, including configuration changes, data governance, and system integrations.
- Change control for work instructions, routing changes, or document management.
- Audit preparation and evidence collection across departments.
- Maintenance, OT cybersecurity, and safety-related procedures where clear accountability is essential.
Operationally, the RACI matrix is often referenced in procedure documents, project charters, and governance frameworks, and may be attached to controlled quality system documents as supporting evidence of role clarity.
What a RACI matrix is not
- It is not an organizational chart. It does not show reporting lines, only responsibilities for defined activities.
- It is not a full project plan or schedule. It complements plans by clarifying who is involved, but does not replace timelines or resource plans.
- It is not a detailed procedure. It sits alongside SOPs and work instructions, which describe how tasks are performed.
Common confusion
- RACI vs. responsibility matrix: In many organizations, the term “responsibility matrix” informally refers to a RACI matrix. Strictly speaking, RACI is one specific structured format for a responsibility matrix.
- RACI vs. RASCI / RACI-VS and other variants: Variants such as RASCI (adding “Support”), RACIQ (adding “Quality” or “Query”), or RACI-VS (adding “Verify” and “Sign-off”) extend the model but follow the same principle of mapping roles to activities.
- RACI vs. job descriptions: Job descriptions define broad role expectations. A RACI matrix is more granular and tied to specific processes, systems, or projects.
Context in OT/IT and quality systems
In OT/IT integration and quality systems, a RACI matrix helps clarify responsibilities across operations, engineering, IT, and quality for activities such as master data changes, system access controls, electronic record review, and audit response. This can support consistent execution of processes and clearer evidence of defined responsibilities during internal or external reviews.