The fear of downtime keeps many businesses on a slow or overpriced host for years. It should not — with the right sequence, you can move hosts so smoothly that visitors never notice. Here is how.
1. Lower your DNS TTL first
A few days before migrating, reduce your domain's DNS TTL (time to live) to 300 seconds. This means when you finally switch, the change propagates in minutes, not hours.
2. Copy everything to the new host
Move your files, databases and email to the new server without touching DNS yet. The old site stays live the whole time.
3. Test on the new server before switching
Preview the migrated site on the new host (via a temporary URL or hosts-file entry) and check every page, form and login. Fix issues here, while the live site is untouched.
4. Do the cutover
Once tested, point your domain's DNS to the new host. Thanks to the low TTL, traffic shifts over within minutes. Because both servers briefly run in parallel, nobody hits an error.
5. Keep the old host for a week
Leave the old account active for a few days so any late DNS caches and in-flight emails land safely. Then cancel it.
Zero-downtime checklist
- Lower DNS TTL a few days ahead.
- Copy + test on the new host before changing DNS.
- Cut over, then keep the old host running for a week.
Prefer not to do this yourself? Nexgenz migrates your site for free with a planned, zero-downtime cutover.