Move in stages, with a rollback plan.
- Inventory pages, code, media, database, integrations, email DNS, and analytics.
- Create an independent backup and test it before the move.
- Build and test the replacement on a temporary address.
- Lower DNS TTL only when the new site is ready; preserve mail records.
- Switch DNS, test critical paths, monitor errors, and keep the old host available during verification.
Warning: some hosted builders cannot export an identical working site. In that case, migration may mean rebuilding content and design on a new platform.