Website Migration SEO
Investing in a quality SEO migration service for your website is crucial if you’re hoping to retain your search visibility and organic traffic in search engines.
When your website changes, your search performance is at risk
Planning a website change and worried about losing traffic?
Redesigns, replatforms, and domain changes regularly wipe out years of SEO work. Not because the new site is bad, but because search engines lose the signals they trusted before. Rankings fall. Traffic dips. Leads slow down.
It often happens after launch, when fixing it is harder, slower, and much more stressful to explain to the rest of the business.
This is exactly the problem Website Migration SEO is designed to solve.
What is Migration SEO?
Website migration SEO is the planning and technical work that protects your organic traffic when your website changes.
That could be a redesign.
A new CMS. A domain move. Or a full replatform.
At Koozai, we make sure search engines understand what’s changing, what’s staying the same, and which pages still matter, so your visibility doesn’t disappear overnight.
Types of website migration
There are five main types of site migrations, depending on the work that needs to be carried out and what you want to achieve.
The image shows the five main types of migrations. It’s also possible that your site may require a hybrid migration. In other words, a combination of any of the five and it goes without saying that the more changes needed, the more complex and riskier the migration.
Why website migrations so often go wrong
Most migration problems are not caused by bad intentions. They happen because SEO is brought in too late, or treated as a final check.
Search engines rely on structure, signals, and consistency.
A migration changes all three.
Individually, these look small. Together, they tell search engines the site they trusted no longer exists.
The most common problems we see
- Old URLs are removed without proper 301 redirects, so authority is lost
- Title tags, metadata, and schema drop out during CMS changes
- Navigation and internal links are reshuffled without SEO checks
- Staging sites are accidentally indexed
- XML sitemaps no longer reflect the real site
What website migration SEO actually involves
Migration SEO is not one task.
It’s a sequence of checks that protect your site before, during, and after launch.
Before launch: protect what you’ve already earned
- Full crawl of the current site
- URL-by-URL redirect mapping
- SEO benchmarks for traffic, rankings, and indexation
- Staging site checks to prevent indexing
- Input into templates, navigation, and page rules
During launch: control the handover
- Redirect testing at scale
- Robots.txt and indexation checks
- XML sitemap validation and submission
- Analytics and tracking verification
After launch: stabilise and improve
- Coverage and error monitoring
- Ranking and traffic tracking
- Priority page re-optimisation
- Internal linking and crawl fixes
Miss one stage and recovery slows down. Get them right and most users never notice the change.
What you get with Koozai’s Website Migration SEO service
This is a specialist SEO engagement, not a box-ticking exercise.
What’s included:
- Pre-migration SEO audit and risk log
- Full redirect strategy and testing plan
- Staging environment SEO review
- Go-live technical checklist
- Post-launch monitoring and fixes
- Clear reporting you can share internally
Who’s responsible:
Your migration is led by senior SEO specialists.
Not juniors learning on your site.
You get one point of contact, calm updates, and straight answers.
Types of website migrations we support:
Different migrations carry different risks.
We tailor the approach, not the paperwork.
- Website redesigns
- Domain changes
- CMS migrations
- Ecommerce replatforming
- HTTP to HTTPS moves
- Multi-site mergers and consolidations
Whether you’re a B2B business restructuring content or an ecommerce brand moving platforms, the goal stays the same: keep what works, improve what doesn’t, and avoid surprises.
Koozai is a website migration SEO agency and our experts are regularly asked to contribute to industry publications including:
What happens when SEO isn’t handled during a migration
Without specialist migration SEO
- Rankings drop after launch
- Traffic recovery takes months
- Fixes become reactive
- Stakeholder confidence takes a hit
With planned migration SEO
- Rankings are protected
- Traffic stabilises faster
- Search engines trust the new site
- Teams launch with confidence
This is not about perfection.
It’s about control.
Common migration problems we fix
Traffic dropped after website redesign
If you launched a new site and organic traffic fell by 20 to 50%, redirect mapping gaps, internal linking changes, or blocked crawling are common culprits.
Short-term declines can happen even on well-managed migrations
Next step: SEO after a site redesign, do not let rankings slip.
Rankings disappeared after platform migration
Switching platforms can change URLs, templating, metadata defaults, and internal linking.
That combination can remove page signals search engines rely on, even if the content looks similar to you.
Next step: How to handle a website migration correctly.
Google not indexing new website pages
After a migration, Search Console can show coverage issues such as crawl errors or pages that are discovered but not indexed.
These often point to internal linking gaps, weak canonical signals, or crawl budget being wasted on redirect chains.
Next step: Essential metrics and insights to watch for after a website migration.
Lost domain authority after redesign
Authority transfer is not magic.
It depends on consistent URL mapping, clean redirects, and preserving internal linking so important pages still receive link equity.
Next step: Top pages to protect during a migration.
Traffic dropped weeks after launch
A delayed drop often happens when search engines replace old URLs with new ones in the index, then discover redirect gaps, thin equivalents, or internal links that no longer support priority pages.
Next step: 5 signs your SEO migration has gone wrong.
Why this problem is getting worse, not better
Website migrations are more complex than they used to be.
There are more moving parts.
Modern sites rely on more scripts, more templates, and more integrations.
That provides more ways to accidentally break crawl paths and tracking.
More pressure on structure.
AI-driven search surfaces answers, not just links.
Clear structure and consistent entities help machines reuse your content accurately.
Read: The likely impact of site migrations in the age of AI search.
Recovery can take longer than teams expect.
A Search Engine Journal study of migrations found an average of 229 days for third-party tools to reflect traffic returning to pre-migration levels for domain moves, and reported that 42% did not return at all.
If you want a calm, practical view of what usually gets missed, see: Overlooked factors during site migrations.
Already lost traffic after a migration?
You’re not alone.
And it’s often fixable.
We run focused SEO migration recovery projects for sites that launched without enough protection.
These usually include:
- Forensic audits to find what broke
- Redirect and indexation repairs
- Priority keyword recovery
- Clear timelines and expectations
The earlier you act, the quicker recovery tends to be. Most sites can recover with the right fixes.
If you’re in this position, start here: Your guide to recovery after a site migration. And this explains how we approach recovery work specifically: What is an SEO migration paramedic?
Talk to a Website Migration SEO specialist
Let’s protect your next launch
If your website is changing, SEO needs a seat at the table.
Book a friendly chat with our migration specialists and we’ll:
- Review your plans or current site
- Flag risks early
- Explain what matters most for your launch
No panic.
No jargon.
Just experienced advice.
Proof from real website migrations
We don’t talk about migrations in theory.
We’ve helped brands:
- Protect traffic during redesigns
- Maintain rankings through platform changes
- Recover after migrations went wrong
You can see examples here:
Driving footfall for a top architects and design studio
SEO, PR, and website migration support for a leading UX education provider
Nailing SEO & PPC for the leader in hardwood flooring accessories
Carrying out a website migration can be a stressful time but Koozai were ready for the technicalities involved and our worries about the potential loss of traffic were put to rest. The team worked closely with our design agency to support the entire transition.
Koozai has helped us to realise and fine-tune not only our online presence, but they’ve helped us to stand out from the crowd for the future.
Sarah BeanHead of Copy
FAQs
Can I Do A Website Migration Myself?
It is possible to use third party guides on the internet to try and implement your own migration. However, it is generally not advisable to implement a migration unless you have SEO expertise and experience in delivering successful migrations as costly mistakes are easily made. This could result in a drop in rankings and traffic for your website.
Will A Website Migration Harm My SEO?
A quality SEO migration won’t significantly impact your website’s organic SEO traffic in the long term. However, a poorly executed migration can harm your website’s SEO significantly and result in a drop in rankings, which is why it is so important to invest in the services of an SEO specialist who is experienced in website migrations. A poor migration can result in things like broken redirects, duplicate content, and unindexed pages, all of which will hurt your website’s SEO
How Long Does An SEO Site Migration Take?
This one really depends on the size of your website, how much content it has and what you want to move over to the new website. A website with less than 100 pages is going to take substantially less time to migrate than a website made up of several hundred or even thousands of pages. Depending on the size of the website and the scope of the project, you can expect it to take anywhere from a month to a few months for a website migration to be fully completed. This is because time is needed to plan, develop a staging site, audit, implement and monitor the migration to ensure nothing goes wrong.
How Much Does A Website Migration Cost?
The answer to this one is ‘it depends'. The cost of a website migration can differ depending on the size of the website, the scope of the project, the quality of the service provider and the services required. In all cases, we'd recommend investing early in the process to ensure it's done correctly rather than opting for a “cheap” route, and having to retrospectively fix issues several times over - stalling, or even worse ruining your organic performance in the process. This always ends up costing more.
Get in touch for a quote on your website migration or for our migration consultancy rates.
Can you fix SEO problems after a website has already launched?
Yes. Recovery typically involves forensic crawling, redirect fixes, restoring missing signals, repairing internal links, and monitoring Search Console until performance stabilises.
Read: Your guide to recovery after a site migration.
How long does it take to recover traffic after a website migration?
Recovery time varies by migration type, site size, and execution quality. A study on domain migrations reported long average recovery periods and that a material share did not return to pre-migration levels.
What is the best time of year to migrate your website?
Timing depends on your sector and how much revenue is driven by organic search.
Many ecommerce brands avoid major migrations close to peak trading periods such as Black Friday, because recovery volatility can overlap with commercial targets.
Plan your migration window around your lowest-risk period and build in time for post-launch monitoring.
What is a website migration SEO audit?
It is a review of your migration plan or live site to identify redirect gaps, indexation issues, broken internal links, lost page signals, and the highest-risk areas to fix first.
What is website migration SEO?
Website migration SEO protects rankings, organic traffic, and crawl equity when a website changes structure, platform, domain, or URL patterns.
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Questions?
Call us on 0330 353 0300, email info@koozai.com or fill out our Contact Form.
