Website migration SEO is the process of preserving useful access, content relationships and measurement while a website changes domain, platform, URL structure or templates. It reduces avoidable disruption; it cannot guarantee that search visibility will remain unchanged.
The most valuable preparation is a complete enough inventory and a clear owner for every release decision. A redesigned homepage is not evidence that older landing pages, forms and integrations survived the move.
Turn migration phases into acceptance checks
| Phase | Required evidence | Owner to identify |
|---|---|---|
| Inventory | Old public URLs, important content and customer journeys. | Website and content owners. |
| Mapping | Relevant final destinations and intentional removal decisions. | SEO reviewer and developer. |
| Release | Redirect, metadata, form and integration checks. | Deployment and application owners. |
| Handover | Known limitations, monitoring scope and recovery information. | The person maintaining the website after launch. |
Define the change and its boundaries
Write down what is moving: host, protocol, paths, content, platform or presentation. Avoid combining unrelated changes without a reason. The more variables change together, the harder it becomes to diagnose a problem.
Confirm the deployment owner, rollback conditions and approval process. Keep private credentials out of migration spreadsheets. Give contributors the access their responsibilities require.
Capture the baseline before editing
Export important URLs, metadata, canonical destinations, internal links and available performance evidence. Include landing pages outside the main navigation and assets linked from other sites.
Compare a crawl with the CMS and sitemap so isolated pages are not missed. Preserve a copy of the old content and the application's recoverable state. An inventory based only on the new menu is incomplete.
Create a destination map
Assign a relevant final address for each moved URL. Identify intentional removals separately. Do not redirect unrelated old pages to the homepage merely to make an error report look cleaner.
Google's site-move guidance is the technical reference. Use suitable permanent redirects for genuine moves and test the destination directly rather than building avoidable chains.
Preserve meaningful content and metadata
Check service explanations, article bodies, titles, descriptions, image alt text and structured data. A new template can silently omit an old field even when the CMS import succeeded.
Use the on-page SEO guide for page-level checks. Do not replace established useful content with a generic short introduction simply because the new design has less room.
Protect staging without blocking production
Keep the work-in-progress environment appropriately protected. Plan how production crawling and indexing directives will be verified at launch. A staging noindex setting left on the public site can create a serious discovery problem.
Private content must remain private on both environments. Do not weaken authentication to make a crawler test easier. Review application settings, host configuration and integration destinations before release.
Test the customer journey
Submit test forms, check success feedback and confirm delivery to the right destination. Review call links, messaging links, account flows and any transaction path relevant to the site.
A successful page response does not prove the CRM integration works. Identify whether test records need a safe cleanup process and keep customer data out of public reports.
Validate URL signals together
Check redirects, final 200 responses, canonicals, sitemap contents and important internal links. Ensure the public site does not reference development hosts or inaccessible assets.
Read the canonical guide and sitemap guide for detailed checks. Use representative templates plus the complete redirect map where tooling permits.
Monitor after the release
Record the release time and distinguish availability incidents, tracking changes and search processing. Review relevant errors and landing-page patterns rather than reacting only to a site-wide average.
An illustrative migration review might discover that an old quotation page redirects correctly but its form notification still targets a staging inbox. The corrective action belongs to integration delivery, not a new keyword strategy.
Close the project with a handover
Keep the URL map, test evidence, unresolved issues and ongoing owners. Agree what monitoring remains included and what constitutes additional work. Do not remove useful redirects just because the visual redesign is finished.
Discuss website development with the existing site's inventory and migration requirements. A professional move preserves the application and gives the business evidence that important pages and journeys still work.