A change advisory board (CAB) is a group that reviews and approves proposed changes to production systems before they are released. It is a common way to show that changes are authorized, but SOC 2 does not require one by name.
In SOC 2 engagements, what matters is that production changes are authorized, tested, and recorded according to your own policy. A CAB is one way to meet that. Smaller engineering teams often meet it through peer review and pull request approval instead.
In simple terms, a CAB answers:
- Who decides whether a risky change may go ahead?
- How is that decision recorded?
- How do we avoid conflicting or poorly timed releases?
Why a Change Advisory Board Matters
- It gives risky changes a second set of eyes before release
- It creates a record of approval that fits the change management process
- It helps coordinate release timing across teams
- Meeting notes and decisions can become part of the audit trail
Do You Need a CAB for SOC 2?
No. SOC 2 is built on the Trust Services Criteria, which ask that changes be authorized, designed, tested, and approved. They do not prescribe a board. Your control description decides what approval looks like, and your auditor tests against that description.
If your policy says a CAB approves certain changes, then the CAB becomes part of the control and will be tested. Only promise in your policy what you will actually do.
CAB vs Pull Request Approval
| Aspect | CAB | Pull request approval |
|---|---|---|
| Who decides | A group of designated reviewers | One or more code reviewers |
| Best suited to | High-risk or cross-team changes | Day-to-day code changes |
| Typical record | Meeting notes, ticket approval | Review record in the code host |
| Speed | Slower, often scheduled | Fast, continuous |
Many teams combine them: routine changes go through code review, while a defined set of high-risk changes goes to a CAB or an equivalent approver.
Example Evidence
| Activity | Example evidence |
|---|---|
| Scope definition | Policy stating which changes need CAB approval |
| Approval | Ticket or meeting minutes with approver names and dates |
| Implementation | Deploy record tied to the approved ticket |
| Urgent changes | Emergency change record with later review |
How Auditors Typically Test It
Auditors usually take the audit population of production changes, select an audit sample, and check that each item has the approval your policy requires. A missing approval can be recorded as a control deviation.
Common Mistakes
- Writing a CAB into policy and then not holding it
- Approving changes after they have already been released
- Keeping decisions only in chat or verbal notes
- Having no defined path for urgent changes
- Letting the requester approve their own change
How AuditFlo.co Helps
AuditFlo.co helps teams retain audit-period history for change records when tickets and pull requests live in connected systems your team already uses. That history can make it easier to trace sampled changes to their approvals. AuditFlo.co does not approve changes, does not issue SOC 2 reports, does not certify compliance, and does not replace auditors.
To see the workflow for your stack, request a demo.
Key Takeaway
A CAB is one acceptable way to authorize risky changes, not a SOC 2 requirement. Choose the approval model that fits your team, write it down accurately, and keep a record of every approval.