Website Migration.
Learn what Website Migration means in modern search and SEO.
The process of making significant changes to a website's structure, domain, platform, or URL architecture that affect organic search performance.
A website migration is any significant change to a site's technical, structural, or content foundations: domain changes, platform changes (WordPress to Shopify, custom CMS to Headless), URL structure restructuring, HTTPS migration, content consolidation, or site mergers. Migrations are high-risk SEO events because they can cause significant ranking drops if not planned and executed correctly.
Pre-Migration Planning
A successful migration requires extensive pre-migration planning: complete crawl of the current site to capture all existing URLs; mapping every current URL to its new URL equivalent; preparation of redirect files; baseline traffic and ranking capture for comparison; staging environment testing before launch; and pre-submission of the new sitemap. The redirect mapping is the most critical document—every URL with meaningful traffic or backlinks needs a corresponding 301 redirect to its new location.
Post-Migration Monitoring
Post-migration, monitor daily: Google Search Console coverage reports for crawl errors and indexation drops; organic traffic by landing page in analytics; ranking positions for primary keywords; crawl rate in server logs; and Core Web Vitals scores on the new platform. Most ranking fluctuations following migrations are temporary if redirects are correctly implemented—full stabilisation typically takes 2–6 months.
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