In a standard change control flow, communicating the change deployment is done last, after the change has been evaluated/approved, implemented, and validated. CompTIA Project+ explicitly frames change control as a process that includes: collecting/documenting changes, assessing impacts, determining decision makers (often the CCB), updating plans/baselines as needed, implementing the change, validating/testing implementation, and communicating deployment. The communication step is last because stakeholders need confirmation of what was deployed, when it was deployed, and any impacts—based on verified results rather than assumptions.

Option A (escalate to the CCB) happens early when approval is needed. Option B (update the project plan) occurs after approval/impact assessment so the plan reflects the authorized change. Option C (test the implemented change request) is part of validation and must occur before announcing deployment completion; otherwise, you risk communicating a change that doesn’t work as intended.

So, after the change is approved, the plan updated, the change implemented and tested, the final step is to communicate the change deployment to affected stakeholders and teams—closing the loop and maintaining governance and transparency.