A CAB meeting is a scheduled session where a Change Advisory Board reviews, evaluates, and approves (or rejects) proposed changes to a company’s IT systems and infrastructure. CAB stands for Change Advisory Board, a concept rooted in the ITIL framework for IT service management. If someone at your organization invited you to a CAB meeting, they’re asking you to help assess whether a planned technology change is safe to implement.
What a Change Advisory Board Does
The Change Advisory Board acts as a decision-making body responsible for evaluating modifications to IT infrastructure before they happen. Its core job is to reduce risk. When a team wants to deploy new software, update a server configuration, migrate a database, or make any significant change to production systems, the CAB reviews the proposal and decides whether it’s ready to move forward.
The board weighs several factors for each proposed change: what could go wrong, how it would affect other systems and users, whether the team has a rollback plan if something fails, and whether the timing makes sense given other changes already scheduled. The goal is to prevent outages, security gaps, and unexpected disruptions that come from poorly coordinated changes.
Who Attends a CAB Meeting
CAB meetings typically include a mix of technical and business stakeholders, though the exact makeup varies by organization. The most common roles include:
- CAB manager: The person who runs the meeting, sets the agenda, and ensures decisions are documented. This is often a change manager or IT operations lead.
- Board members: A standing group of people with the technical and business knowledge to evaluate changes. This usually includes senior engineers, system administrators, security staff, and representatives from affected business units.
- Change requesters: The individuals or teams proposing a specific change. They present their plan and answer questions from the board.
- Delegates: People who can fill in for the CAB manager or other key members when they’re unavailable.
Not every change requires every stakeholder in the room. A minor software patch might only need a few reviewers, while a major infrastructure migration could pull in people from networking, security, application development, and business operations.
What Gets Discussed
A standard CAB meeting agenda covers more than just new proposals. A typical session works through several categories of items:
- New change requests: Proposals submitted since the last meeting that need the board’s initial review and risk assessment.
- Pending changes: Proposals from previous meetings that were sent back for more technical review or additional information. These return once the requested analysis is complete.
- Rolled-back changes: Changes that were implemented but had to be reversed because something went wrong. The board reviews what happened and what needs to change before a second attempt.
- Post-implementation reviews: Completed changes get a brief retrospective to confirm they achieved the intended result without unexpected side effects.
- Unauthorized changes: Any changes that were made outside the normal approval process get flagged and discussed, both to assess their impact and to reinforce the process.
- Standard change definitions: The board can designate certain low-risk, routine changes as “standard changes” that no longer need individual CAB approval going forward. This keeps the meeting focused on changes that actually carry risk.
How Decisions Get Made
For each proposed change, the board evaluates the request against a few key questions. What’s the business justification? What’s the risk if the change fails? What’s the risk of not making the change? Is there a tested rollback plan? Are the right resources available during the implementation window?
The outcome for each change request is typically one of three decisions: approved, rejected, or deferred pending more information. When a change is approved, the board often specifies conditions, like a required maintenance window or a mandatory notification to affected teams. Rejected changes come with an explanation of what concerns need to be addressed before resubmission.
Most organizations hold CAB meetings on a regular cadence, often weekly, to keep the pipeline of changes moving. Some companies run them biweekly or monthly depending on their volume of changes.
Emergency CAB Meetings
Not every change can wait for the next scheduled meeting. When a security threat, system outage, or other urgent issue demands an immediate fix, organizations convene an Emergency CAB, sometimes called an ECAB. These are smaller, faster sessions with a narrow focus: get the right technical experts together, assess the trade-off between the risk of acting quickly and the risk of waiting, and make a call.
An ECAB typically includes only the people with direct knowledge and skills relevant to the emergency, not the full board. Top-level executives rarely attend. The process is streamlined by design. When absolutely necessary, the ECAB may waive the extensive testing that a normal change would require, making on-the-fly decisions after weighing the risk of deploying an untested fix against the damage of leaving the problem unresolved.
CAB Meetings in Agile and DevOps Teams
In organizations that practice DevOps or agile development, the traditional weekly CAB meeting can feel like a bottleneck. Teams deploying code multiple times a day don’t always fit neatly into a process designed around scheduled review sessions. Many companies have adapted by automating approval workflows for low-risk changes, using peer code reviews as a lightweight alternative to formal board review, and reserving the full CAB process for high-risk or high-impact changes.
Modern IT service management platforms let organizations configure different approval paths based on the type and risk level of each change. A routine configuration update might flow through an automated approval, while a database schema change affecting customer data still goes to the full board. This approach preserves the risk management value of the CAB without slowing down routine work.
What to Expect If You’re Attending One
If you’ve been invited to your first CAB meeting, you’re likely there because you either proposed a change or your team will be affected by one. Come prepared to explain your change request in practical terms: what you’re changing, why, what the impact will be if something goes wrong, and how you’ll reverse it if needed. Be ready for questions from people who manage other systems that might be affected.
If you’re attending as a reviewer rather than a requester, your job is to flag risks the proposing team might not have considered, particularly impacts to systems or processes you’re responsible for. The meeting runs most efficiently when everyone has reviewed the agenda and submitted change requests in advance rather than presenting them cold.