To migrate a website to cloud hosting, first decide whether the move changes only the hosting or also changes the site’s URLs. Then inventory the application, prepare and test the cloud environment, back up and synchronize data, and switch traffic only when the new site is ready. A hosting-only move generally calls for a DNS change; a domain, protocol, or path change also requires a URL-by-URL redirect plan.
First decide whether your URLs will change
Google treats a hosting change with unchanged user-visible URLs differently from a site move that changes URLs. Its hosting guidance is specifically for migrations that do not affect the user-visible URL: Changing Your Web Hosting and SEO. If the domain, protocol (such as HTTP to HTTPS), or URL paths will change, use Google’s site-move guidance as well.
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| Decision | Hosting changes; URLs stay the same | Domain, protocol, or paths change |
|---|---|---|
| Traffic change | Update DNS records to point to the new hosting infrastructure. | Configure redirects from old URLs to their relevant new destinations; update DNS if needed. |
| URL mapping | Usually unnecessary if every public URL truly remains identical. | Map old URLs to the corresponding new URLs. |
| Search Console | Check that Google can access the new host and monitor crawling and indexing. | Submit a Change of Address for eligible domain or subdomain moves, and submit the new sitemap. |
| Redirects | Not ordinarily needed for a pure hosting move. | Use permanent server-side redirects where possible; avoid chains and unrelated destinations. |
| Old host | Keep it available during traffic transition and until the new host is verified. | Keep redirects in place for at least one year, generally, and continue monitoring. |
These workflows should not be collapsed into one checklist: a DNS change moves traffic between hosts, while redirects tell browsers and crawlers where changed URLs have gone.
Choose a cutover method that fits your site
The right migration method depends on how much data must move, how often it changes, how consistent it must remain, and how much service interruption is acceptable. A tested copy and a short DNS cutover may be enough for a small static site. A database-backed site with frequent customer or user activity needs a plan to keep writes consistent, such as replication or a maintenance window that pauses writes for the final synchronization. Do not promise zero downtime until the architecture and cutover method have been tested.
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| Approach | Downtime and consistency | Complexity and risk |
|---|---|---|
| Scheduled maintenance and final sync | Interrupts writes or service for the maintenance window; pausing writes before the final sync helps prevent divergent data. | Can be simpler for workloads that tolerate a planned interruption, but the window must allow for sync and validation. |
| Continuous replication followed by cutover | Can reduce the final transfer window; replication must be caught up and validated before traffic moves. | Requires setup, monitoring, and a tested response if replication falls behind or fails. |
For large datasets, Google Cloud describes scheduled maintenance, continuous replication, and other approaches; the suitable pattern depends on the environment and requirements. Provider cutover guidance also emphasizes final synchronization and source-write controls. See Microsoft’s cutover and validation guidance and AWS cutover strategies.
1. Inventory the current site
Before provisioning anything, list what the site actually needs to run. The inventory is specific to your application, but commonly includes:
- CMS or application framework, web server, runtime, and required versions.
- Site files, themes, plugins, uploads, and other media.
- Database and its size, write activity, and backup and restore method.
- Scheduled jobs, background workers, email, payment, authentication, and other integrations.
- Domain registrar and DNS provider, current DNS records, and TLS certificate arrangement.
- Access controls, secrets, firewall rules, and any external services the application depends on.
Mark each component as stateful (for example, a database or user-uploaded files) or recreatable (for example, generated caches). This helps identify what must be copied and synchronized and what can be rebuilt. Microsoft’s migration execution guidance and the AWS cutover guidance cover these kinds of migration concerns; the exact inventory depends on the site.
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2. Prepare the cloud environment
Provision the runtime, storage, database, networking, application settings, and access controls that the site requires. Destination choices vary: a virtual machine, managed application platform, container platform, or managed CMS each places different responsibilities on you. Check compatibility with the existing application before choosing, and decide who will manage patching, backups, restores, and operational monitoring.
- Configure secrets and credentials deliberately rather than copying them casually.
- Recreate required integrations and scheduled tasks, and confirm how each will behave after cutover.
- Set up backup and restore capability for the destination before production traffic depends on it.
- Check network rules and protections so legitimate users and Googlebot can reach the site.
There is no universal provider or service choice: match the design to the application, portability needs, performance requirements, operations capacity, and budget.
3. Copy the site and test it away from production
Copy the site to the new environment before changing production traffic. Depending on the platform, that might mean transferring static files and assets, exporting and importing a database, or both. Use a restricted or temporary hostname when available so you can check the destination without sending visitors there.
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Test representative pages and important functions, not just the home page. Check images, forms, downloads, authentication, and the site’s core transactions. Confirm that the new host serves the expected content and that temporary access restrictions will not remain in place when production launches.
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Take a recoverable backup before migration, and test restoration where feasible. Then carry out the consistency plan selected for the site. For a write-heavy application, that may mean enabling replication or stopping writes during a maintenance window. Before cutover, complete the final sync, confirm replication has caught up if used, and validate the destination data.
A backup of the old source can help with emergency recovery, but it does not make rollback automatic. Once the new site accepts writes, the old database may become stale. Decide how you would preserve or reconcile post-cutover changes before launch; otherwise, switching back could lose newer data.
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5. Prepare DNS and launch a hosting-only move
If public URLs are staying the same, prepare DNS before launch. Google recommends lowering DNS TTL in advance to help cached records refresh sooner. Its guidance gives a few hours as an example of a conservative low TTL and suggests making the change at least a week before the move. Whether that timing helps depends on your DNS setup and existing record behavior.
- Lower the relevant DNS record TTL in advance, if appropriate for your DNS provider and setup.
- Confirm the new site is ready, data is synchronized, and temporary crawl blocks or
noindexrules will be removed. - Update DNS records to point to the new infrastructure.
- Keep the old host running while traffic shifts; DNS caches do not all refresh at once.
- Check availability, site behavior, and access from both user and crawler perspectives.
Do not shut down the previous service just because the DNS record has changed. Confirm that the new host serves users and Googlebot correctly and that traffic to the old host has sufficiently subsided.
6. Add redirects if URLs change
If the move changes domains, protocols, or paths, DNS alone is not enough. Create a map from each old URL to its relevant new destination, then configure permanent server-side redirects where possible. Google recommends redirects such as 301 or 308 for permanent moves and advises against redirect chains and sending many unrelated pages to one generic destination. Test the redirect destinations before launch.
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Update relevant site references, including canonical URLs and sitemaps, so they point to the new URLs. For domain or subdomain moves where it applies, submit a Change of Address in Search Console and submit the new sitemap. Keep redirects for at least one year as a general Google recommendation; monitor them for longer if users or external links continue to reach old URLs. See Google’s site-move guide and its redirect guidance.
7. Monitor the new host and retire the old one carefully
After launch, check both hosts while traffic transitions. Review server logs, DNS resolution, availability, error rates, forms and transactions, database integrity, and crawler access. In Search Console, use URL Inspection and indexing reports to investigate access or indexing problems. Remove any temporary crawl blocks or noindex directives that were used during testing.
Google says a temporary drop in Googlebot crawl rate immediately after a hosting change can be normal; crawling may rise again over the following days if the new infrastructure remains accessible and is not seriously slowed. For URL-changing moves, Google says most pages on a small or medium-sized site may take a few weeks to move, while larger sites can take longer. These are general observations, not a ranking guarantee or deadline. See Google’s hosting-change monitoring guidance and its URL-changing move guidance.
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