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Website Migration

Site Migration | Replatforming

Portrait of Lukas Horvath, co-founder of Roelu Studio
Lukas HorvathCo-founder

What is Website Migration?

Website migration is the process of moving a website from one platform, domain, hosting environment, or technology stack to another. Also called replatforming or site migration, common scenarios include moving from WordPress to a headless CMS, switching hosts, changing domain names, or restructuring URLs as part of a redesign. A website migration touches DNS, redirects, content, analytics, and SEO simultaneously, which is why it carries real risk if rushed.

Why it matters

Website migrations are where most of a company's hard-won SEO equity gets quietly destroyed. The pattern is always the same. The team rushes the launch. Old URLs are not mapped. Redirects are missed. Within a month, organic traffic is down forty percent and nobody can explain why. A proper website migration is ninety percent planning. Audit every URL. Map old to new. Run the new site on staging until it matches the old one's quality. Coordinate DNS cutover. Monitor 404s aggressively in the first weeks. The actual go-live should be the boring part. If your migration is exciting, you did it wrong.

How it works

A website migration runs in phases. First, a content and URL audit — every page, every asset, every redirect already in place. Second, the new build on a staging environment that mirrors production. Third, a redirect map matching every old URL to its closest new equivalent. Fourth, analytics, tracking, and search console verification on the new platform. Fifth, lowering DNS TTLs days before the cutover so changes propagate in minutes. Sixth, the cutover itself — DNS switch, redirects live, sitemap submitted to Google. Then weeks of monitoring 404 reports, crawl errors, and rankings, fixing whatever the audit missed before launch.

Related terms

  • Website Redesign

    Websites

    A full visual and structural overhaul of an existing site — new design system, new content model, often a new platform — done because the old one no longer…

  • Redirect

    Websites

    An instruction that sends visitors and search engines from one URL to another — used to fix broken links, consolidate pages, or move content to a new address…

  • Staging Environment

    Websites

    A private copy of your website where the team can preview changes, test new features, and catch problems before pushing them live to real visitors. Also called…

  • Custom Web Development

    Websites

    Building a website from scratch with a designer and developer, instead of using a template or no-code platform — owned by you, shaped to your business, no…

  • Headless CMS

    CMS & Content

    A content management system that separates where content is stored from how it's shown, giving marketers a place to publish without rebuilding the front-end…

  • Vendor Lock-in

    Business & Strategy

    When switching away from a platform becomes so painful, slow, or expensive that you stay even after the platform has stopped serving you well — the silent tax…

  • SEO Audit

    SEO/AEO/GEO

    A structured review of a website's SEO health — covering technical setup, on-page content, backlinks, and rankings — to find what's broken, what's missing, and…

  • URL Structure

    Websites

    The way the paths on your website are organized — like /pricing or /case-studies/acme — designed to be readable, predictable, and useful for both search…