SEO migration
The problem we solve

SEO
migration

The technical work that decides whether a move costs you visibility.

An SEO migration managing the technical side of a domain, platform or structure change specifically to protect search visibility: URL mapping, redirect strategy and post-launch monitoring built to catch problems before they become permanent losses.

The problem
What is included

What an SEO migration
actually involves

What it involves

Search visibility built over years can be lost in a single poorly executed migration. The failure modes are well understood and avoidable — missing redirects, changed URL structures without mapping, lost internal linking — but only if someone is specifically managing for them.

What we deliver

A complete URL mapping between old and new structures, a redirect strategy implemented correctly, preservation of internal linking and structured data, and close monitoring of indexation and rankings after launch.

Focused where the risk actually is

We keep our focus specifically on the search visibility risk around your migration or redesign, working alongside whoever runs the underlying platform project, so nothing about your rankings falls through the gap between teams.

case studies

Clients we've worked with

Real projects for industrial and pharmaceutical companies.
Migration track record
Track record

What our SEO migration
work has protected

The scale our SEO migration work has operated at.

+10
years building for regulated industries
+200
organisations have trusted Code
+1.500
documents migrated with their access permissions intact
+160
scientific papers in a single managed repository
SEO migration by trigger
Who needs it

What kind of migration puts pharma visibility at risk

The risk profile differs by what is actually changing. An SEO migration starts from that change.

Migration process
Four stages

How we run an
SEO migration

Four stages. An SEO migration exists specifically to prevent the well-known failure modes.

PRE-MIGRATION AUDIT
01
01

A complete picture of what currently ranks

We document the current site's full URL inventory, rankings and internal linking before anything changes, since this baseline is what everything else is measured against.

What we document

We record every indexed URL on the current site, capture where each one currently ranks and how much traffic it receives, and map the internal linking that passes authority between pages, so we know precisely what has to be preserved before a single change is made.

Result

You have an exact, dated snapshot of current performance. After migration, any drop can be measured against this baseline rather than argued about from memory, and any genuine loss is caught immediately instead of months later.

URL MAPPING
02
02

Every URL accounted for

We map every existing URL to its new destination, which is the single most important technical step in preventing visibility loss.

What we produce

We work through the full inventory from the audit and assign every single indexed URL a specific destination on the new site, including edge cases like paginated archives, filtered listings and old campaign landing pages that are easy to overlook.

Result

Nothing gets left to resolve itself as a generic error page or a guessed redirect. Every page that earned visibility on the old site has a defined, deliberate place on the new one before launch.

REDIRECT IMPLEMENTATION
03
03

Correctly implemented, not just present

We implement redirects correctly — the right type, no chains, no loops — since a poorly implemented redirect can fail to pass the visibility it was meant to preserve.

What we implement

We implement each redirect as a permanent, correctly coded redirect rather than a temporary one, remove chains so a URL redirects in a single hop rather than three, eliminate loops, and carry structured data and internal linking through to the new destination intact.

Result

The redirects do the job they are meant to do technically, not just visually. Search engines pass authority through them cleanly instead of treating a chained or looping redirect as a dead end.

POST-LAUNCH MONITORING
04
04

Catching problems while they are still fixable

We monitor indexation and rankings closely after launch, since migration problems are far easier to fix in the first weeks than months later.

What we monitor

We watch how quickly the new URLs get indexed, track ranking movement page by page against the baseline we recorded before launch, and check crawl reports daily for errors that would block a page from being recrawled correctly.

Result

A missed redirect or an indexing hiccup gets caught and fixed within days rather than discovered in a quarterly report, which is the difference between a temporary dip and a ranking loss that takes months to rebuild.

SEO migration questions

What comes up before a domain or platform migration.

How much traffic do migrations typically lose?

A well-executed migration should lose very little traffic, and only temporarily, while search engines re-crawl and re-index the new URLs. Poorly executed migrations can lose a large share of visibility, sometimes permanently, and the difference between the two outcomes is almost entirely down to execution quality and planning.

Do you handle the platform migration itself?

Not directly — our focus is specifically the SEO risk within a migration, including URL mapping, redirects and ranking monitoring, rather than the platform build itself. We frequently work alongside whoever handles the platform or redesign project, coordinating the launch sequence with them. See CMS replatform for the broader platform-move scope this SEO work typically sits within.

How long does recovery take after a migration?

With correct redirects and URL mapping in place, rankings typically stabilise within a few weeks as search engines finish re-crawling the new site. Recovery from a poorly executed migration, by contrast, can stretch into months while lost signals are rebuilt, which is precisely the outcome careful migration planning is designed to prevent from the outset.

Can this be done alongside a rebrand?

Yes, and when a domain or brand name changes, SEO migration work becomes a required part of the rebrand rather than an optional add-on, since every URL and ranking signal has to move with the new identity. See rebrand rollout for how the domain change, identity update and redirect mapping are sequenced together in one project.

Related problems we solve

Other pharmaceutical website problems we solve

SEO migration often connects to these related problems.

SEO migration

Protect your visibility
through an SEO migration

A domain or platform change on the horizon, or one already planned without an SEO plan attached. Tell us what is changing and we will tell you how we would approach the SEO migration.

contact us
Contact Form

Tell us
about your project

Tell us about your organization’s context and the planned scope of the project.
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