Migrating client sites sounds risky, but a clear process keeps it calm. Plan each move, back up first, and test before you switch, and clients need never notice a thing.
Migrate client sites safely by planning each move, taking full backups, copying files and databases, testing on the new host, then switching the domain. Use a provider that offers free or guided migrations to cut the risk.
Why migrations feel scary but need not be
Moving a client site to a new host means shifting files, a database, and settings without breaking anything. Done badly, it causes downtime or broken pages that the client sees. Done with a plan, it passes quietly.
The trick is a repeatable process. Once you have moved a few sites the same way, migrations become routine. A host that offers free or guided migrations removes most of the worry. Our roundup of the best hosting for agencies highlights providers that help you move.
Plan the move first
Start by listing what the site needs. Note the platform, plugins, database size, and any custom settings. Check the new host meets those requirements before you begin.
Pick a quiet time for the switch, such as low-traffic hours, and tell the client what to expect. A short heads-up avoids panic if they spot anything odd during the change.
Take a full backup
Never migrate without a complete backup of the current site. Copy every file and the full database, and store them somewhere safe. If anything goes wrong, you can restore and try again.
Treat the backup as your undo button. With it in hand, a failed migration is an inconvenience rather than a disaster.
A simple rule for migrations: keep the old site live until the new one is fully tested. Never delete anything until the new host serves the site perfectly and the client has confirmed it works.
Move the files and database
Copy the site files to the new host and import the database. Many providers do this for you as a free migration, which saves time and reduces mistakes.
If you move it yourself, update the site settings to point at the new database and check any file paths. Small config details cause most migration hiccups, so work carefully through them.
Test before you switch
Before you change the domain, test the site on the new host using a temporary address or your hosts file. Click through pages, forms, and the checkout if there is one. Fix any broken links or missing images now, while the live site is untouched.
Testing first is what makes a migration safe. The client keeps seeing the old site while you quietly perfect the new one behind the scenes.
Switch the domain
Once the new site tests clean, point the domain at the new host by updating the DNS. Changes can take a few hours to spread, during which some visitors see the old site and some the new.
Because both sites are live and identical during this window, visitors see no break. Keep the old host running until the switch fully settles.
Confirm and tidy up
After the domain settles, test everything again on the live site. Check email, forms, SSL, and speed. Ask the client to confirm all looks right before you close anything down.
Only then cancel the old hosting. Log the move so your team can repeat it next time. Our guide on managing multiple client sites covers keeping everything tidy once the site lives with you.
Build a repeatable checklist
The best way to make migrations painless is to write down your steps and reuse them. A short checklist means nothing gets missed, whoever runs the move.
Note the backup, the file and database copy, the test, the domain switch, and the final checks. Follow it every time, and each migration gets faster and calmer. Our roundup of the best hosting for agencies points to hosts that handle much of this for you through free migrations.
Keep the client informed throughout
A calm migration is as much about communication as technical work. Tell the client the plan, the quiet window you have picked, and what to expect. A short update before and after keeps them relaxed.
When the move is done and tested, confirm it with them and invite a quick check on their side. Clients remember a smooth, well-explained migration, and it builds the trust that keeps them with your agency for the long run.
Handle SSL, email, and redirects
The details around a migration cause most of the surprises. Make sure the SSL certificate is active on the new host so the padlock stays green. Check that email still flows if the domain handles it.
Set up any redirects so old links keep working and search ranking holds. Run through forms and logins one more time. Ticking off these small items is what turns a technically finished move into one the client never even notices.
Learn from every move
Each migration teaches you something. Note what went smoothly and what caused a hiccup, then feed those lessons back into your checklist. Over time your process gets tighter and faster.
Agencies that treat migrations as a repeatable skill rather than a scramble move sites calmly and quickly. That reliability lets you take on new clients without dreading the switch, and it turns migrations from a worry into just another routine part of running your agency.
Frequently asked questions
Will migrating a client site cause downtime?
It should not if you do it right. By testing the new site fully before switching the domain, and keeping the old site live during the DNS change, visitors see no break at any point.
Should I let the host migrate for me?
Often, yes. Many agency hosts offer free or guided migrations. Letting their team move the site reduces mistakes and downtime, especially across many client sites, and saves your team real hours.
How long does a migration take?
The move itself can take an hour or two per site. The DNS change then takes a few hours to spread. Testing adds time, but that testing is what keeps the switch safe.
What if something breaks after the move?
Keep the old site live until the new one is confirmed working. If a problem appears, you can point the domain back or restore from your backup while you fix the new host.
Do I need to tell the client before migrating?
A short heads-up helps. Let them know the plan and the quiet window you have chosen. It avoids panic if they notice anything during the switch and shows you have the move under control.
