Most outages come from changes. A misconfigured route, a wrong VLAN assignment, a firewall rule typo. Change management reduces these incidents.
Basic change management process:
Request: Document what you want to change and why
Review: Someone else checks the plan for errors
Approve: Management accepts the risk
Schedule: Pick a maintenance window
Implement: Make the change
Verify: Confirm it worked
Document: Record what happened
Even small teams benefit. The review step alone catches many mistakes before they cause outages.