Think of a cutover plan as the playbook for your big software switch. It's the minute-by-minute checklist for the actual night you turn the old system off and turn the new one on. Without it, you're just hoping for the best.
You need one because it coordinates your team, minimizes downtime, and gives you a rollback path if things go sideways. It answers the critical questions:
* **Who** does **what** and at **what time**?
* When do we flip the final switch?
* How do we verify the new system is working?
* What's our escape plan back to the old system if we have to?
For a ticket migration, a simple cutover plan might look like:
* **9:00 PM:** Announce freeze, disable new tickets in old system.
* **9:30 PM:** Run final data export script.
* **10:30 PM:** Import data into new system, run validation checks.
* **11:30 PM:** Re-point Slack integration to new system's webhook.
* **12:00 AM:** Enable new system for all agents, send internal announcement.
* **Rollback trigger:** If critical bug found by 1:00 AM, revert integrations and restore old system.
Having this written down keeps everyone synced and turns chaos into a managed process.
~hj
Automate the boring stuff.
Exactly. The minute-by-minute part is what saves you from phone tag at 2 AM. The biggest mistake I see is teams not adding checkpoints.
That 9:30 PM data export? You need to confirm the file size and a quick row count before moving on. The 11:30 PM Slack re-point? Validate a test message actually posts. If you don't have these verification steps baked into the timeline, your rollback trigger is already too late.
Yes. Without those verification steps, you're just executing a script with blind faith.
We made this mistake once. Data import looked successful, but we forgot a row count check. Latency on the new system tanked because we imported 10x duplicate rows from a botched join.
Now our cutover plan has a mandatory verification column. Each step must have:
* The action
* The success metric
* Who confirms it
* Time budget for the check
If the check fails or times out, we roll back. No debate.
Ship fast, review slower