SEO Migration Specialists
SEO migration services that protect your rankings.
SEO migration services from a senior team in Amsterdam and New York: 40+ migrations, every old page planned, every redirect tested.
- Every page on your current site recorded before launch
- A redirect plan for every page, images and PDFs too
- Launch day watched live, then 30 days of monitoring
3
Languages
100+
Landing pages
1
Ongoing partnership
Trusted by ambitious brands worldwide
SEMrush agency
Ranked #1 SEO agency in The Netherlands on Semrush
SEO for Google and AI
Found in Google, ChatGPT, Perplexity and AI Overviews
SEO migration services from a senior SEO agency in Amsterdam and New York
Most agencies treat a migration as one big redirect file. We treat it as a page-by-page project before launch, so Google and AI search keep finding your pages and your rankings move with you.
Most agencies treat a migration as one big redirect file. We treat it as a page-by-page project before launch, so Google and AI search keep finding your pages and your rankings move with you.
LASEO is a 100% SEO agency in Amsterdam and New York, and a migration is the riskiest technical change you will make to your site this year. One wrong set of redirects, one page telling Google the wrong version counts or one test site still showing up in Google, and years of built-up authority can disappear overnight. Our SEO migration services cover every step: recording every page you have, the redirect plan, checking the test site, launch day and 30 days of monitoring after. We have done this 40+ times on Magento, WooCommerce, Shopify Plus, WordPress, Webflow, Sitecore and custom-built sites, as part of our technical SEO work.
Get your free SEO migration auditOur clients
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is the safety net under your new platform. Every old page planned, every redirect tested and launch day watched live, so your rankings and backlinks move with you to the new site.
Your developers build the new platform and your designers create the new look. We sit between them and Google, making sure the new site keeps its rankings, its backlinks and every page and file Google already knows. Most of the work happens before launch, so by the time the new site goes live, the risk has already been taken out.
Part of Technical SEO. Related services: Hreflang Implementation, Mobile SEO, Site Speed and Core Web Vitals.
How a migration engagement runs
A five-phase SEO migration, before and after launch day
Twelve to sixteen weeks from start to finish for a serious migration. Most of the work happens before launch: by the time the new site goes live, the risk has already been taken out.
- 01
Recording every page you have (weeks 1-2)
We scan your current site from top to bottom. From Google Search Console we export every page that appeared in Google at least once in the last 16 months, and from Google Analytics every landing page over the same period. We merge it all into one master list and record the baseline: organic visits, impressions, top landing pages and top search terms. We also save archived copies of your top 200 pages for reference.
- 02
The redirect plan (weeks 2-4)
Every old page gets a destination, with only three options: moved one-to-one to a new address with the same purpose, merged into a parent category, or deliberately removed and reported to Google as gone. No blanket redirect of everything to the homepage. We agree the plan with your CMO and head of product before a single redirect is set up. Redirects are set up in your platform or at server level, and every old address reaches its new page in one step.
- 03
Checking the test site before launch (weeks 4-8)
We scan the test version of your new site and check: the file that tells Google which pages it may visit (often still blocking everything from development), the settings that hide pages from Google, the tags that tell Google which version of a page counts and that point to the right domain, language tags if you have several languages, structured data compared with the old site, internal links, breadcrumbs, the sitemap and whether the redirects cover 100% of the planned pages. The item most often missed: the new site still telling Google to ignore it after it goes live.
- 04
Launch day, watched live
We join a shared call while the new site is switched on. We watch error rates on a monitoring dashboard and live traffic per channel in Google Analytics. Our own checker tests 200 sample pages every 30 seconds for the first 4 hours. We submit the new sitemap in Google Search Console and, if the domain changes, use its Change of Address tool. A WhatsApp group with your lead developer stays open. If anything breaks, we catch it in minutes.
- 05
30 days of monitoring after launch
Every day we review which pages Google has stored, in Google Search Console. Every week we check your search visibility and compare your landing pages in Google Analytics with the baseline. We sweep for broken links, and anything unusual in which pages Google stores is investigated within 24 hours. A weekly check-in with your team. At the end of the month: a written review of what worked, what surprised us and what to fix structurally.
Think of us asthe safety net under your new platform.
Your developers build the new platform. Your designers create the new look. We sit between them and Google, making sure the new site keeps every ranking, every backlink and every page and file Google has already stored. We record every page you have, build the redirect plan, check the test site, watch the launch and keep watching for 30 days after.
What our migration clients say
Migration outcomes in their own words
A replatform is always scary. LASEO led the migration end to end with a redirect map that actually held and we lost no organic traffic.
Our migration to a new stack went smoother than we dared hope. LASEO had the URL mapping, redirect rules and parity checks down to the last detail.
We migrated from Magento to Shopify and LASEO owned the SEO side end to end. No rankings lost, which is exactly what you want to hear.
A replatform is always scary. LASEO led the migration end to end with a redirect map that actually held and we lost no organic traffic.
Our migration to a new stack went smoother than we dared hope. LASEO had the URL mapping, redirect rules and parity checks down to the last detail.
We migrated from Magento to Shopify and LASEO owned the SEO side end to end. No rankings lost, which is exactly what you want to hear.
Google and AI search
Found in Google, and in the answers AI gives
More and more buyers ask ChatGPT, Perplexity or Google's AI Overviews before they click on anything. We make sure your brand shows up there too: as a source AI quotes and a brand it recommends.
More about AI SEOWhere your buyers search
- ChatGPT
- Google AI Overviews
- Perplexity
- Gemini
- Copilot
Your free audit shows whether ChatGPT and AI Overviews mention you.
- 01
Answers AI wants to quote
Clear answers, facts and sources on your pages, so AI tools pick your site as the source.
- 02
A site AI can read
A clean technical base that tells AI tools exactly what you sell and who it is for.
- 03
Mentioned in the right places
Reviews, press and trusted sites: the signals AI uses to decide which brands to recommend.
- 04
Measured, not guessed
We test the questions your buyers ask and track how often AI tools mention you, next to your Google rankings.
Honest answers about SEO migration
What buyers ask before signing a migration project. Concrete traffic-loss figures, timelines and trade-offs.
About LASEO
Question not listed?
A senior specialist is happy to answer it. Request your free audit, or call us directly.
On a well-run migration, with a complete redirect plan, a check of existing redirect chains, a checked test site and live monitoring on launch day, traffic loss in the first 30 days usually stays between 0 and 15 percent and fully recovers within 6 to 10 weeks. On a badly run migration (everything redirected to the homepage, image addresses forgotten, the test site still telling Google to ignore it) the loss runs to 30 to 60 percent and recovery takes 6 to 12 months, sometimes never. The single biggest factor is whether every old page with backlinks or past clicks has a deliberate destination.
Four to twelve weeks of work before launch, depending on the size of the old site. A blog migration with 200 pages and no online shop can be planned in four weeks: one week to record every page and the baseline, two weeks for the redirect plan, one week to check the test site. A 200,000-page online shop in several languages needs ten to twelve weeks: longer scans, bigger redirect plans, more redirects to test and more versions of the test site to check. Anything under four weeks is rushed, and the rush always shows up later as lost rankings.
Yes, if you cover the same checklist. You need: a full scan of the site combined with data from Google Search Console and Google Analytics, a redirect plan with a deliberate decision for every page (moved, merged or removed), a check of the test site before launch including the settings that hide pages from Google, live monitoring on launch day, and 30 days of monitoring in Google Search Console after launch. If your own team has the time and the discipline to do that, you do not need us. Most teams underestimate the time and miss two or three items, and that is where migrations lose traffic.
Always 301 (permanent) for a migration. A 302 is a temporary redirect and tells Google to keep the original address in its results. Use 302 only when the redirect really is temporary, such as a maintenance page or a regional redirect that may change. Every page in the redirect plan should resolve with a 301. Some platforms use 302 by default unless you explicitly choose 301: check the redirect type before launch, not after.
Yes. Images and PDFs often have their own backlinks passing ranking value: a single product photo can have 40 backlinks pointing straight at it. If you migrate without redirecting those files, every backlink to an image or document is wasted. The redirect plan must include your image and document folders, with redirects per file or per pattern. We have seen sites lose 20 percent of their backlink value by overlooking this one category of addresses.
Free SEO migration audit
Planning a migration?Get a free audit from a senior consultant.
Free and without obligation. Tell us the old platform, the new platform, roughly how many pages you have and your target launch date. A senior consultant looks at your site and sends you an expert report on what puts your rankings in Google and AI search at risk, and what to tackle first. No sales pitch. We will also tell you honestly whether we are the right partner for the migration.