A fictional business. The figures are a modelled scenario, not a client result.
Vellmar Hotels · 40-property hotel group · Vienna
Zero-loss migration, then +58% organic bookings
18 months · Europe · Signal plan · Site migration · Hreflang · Log-file analysis · Core Web Vitals
Organic bookings (post-migration)
01The challenge
Each property ran its own microsite on four different CMSs across seven countries. A planned move to one domain put about €9M a year in organic bookings at risk.
Every hotel had built its own search equity over a decade: city-centre queries, spa packages, wedding pages in German, Italian and Czech. A single domain promised one brand and one booking engine, but done carelessly it would reset that equity overnight. Industry benchmarks for unmanaged consolidations of this size show organic losses of 20–40% lasting a year or more. The brief was simple to say and hard to do: move everything, lose nothing.
The estate, before · one square per microsite
€9M
a year in organic bookings riding on the move (2,500 bookings a month).
02Diagnosis
4 CMSs
TYPO3, WordPress, Drupal and a proprietary booking CMS each produced their own URL patterns: 212 distinct templates, trailing-slash and case variants, and 6,300 redirect chains of three hops or more left over from earlier redesigns.
Finding 1 of 4
41%
Twelve weeks of server logs showed 41% of Googlebot requests spent on booking-calendar and rate-parameter URLs. Room and offer pages for 11 hotels had not been crawled in over 30 days.
Finding 2 of 4
8,900
Missing return tags between microsites, de used where de-AT and de-CH were meant, no x-default anywhere, and alternates pointing at redirected or noindexed pages.
Finding 3 of 4
4.1 s
Mobile LCP at p75 was 4.1 s across the estate, driven by unoptimised hero carousels and a render-blocking booking widget; 31 of 40 sites failed INP.
Finding 4 of 4
03The strategy
Built on our Signal plan: the technical engagement for sites where crawl, rendering and architecture decide the outcome.
01
Every one of 61,400 legacy URLs crawled, matched to its new folder path and given a one-hop 301. The map was tested on staging against the live crawl, then released wave by wave — pilot country first — with the old hosts kept alive as redirect servers for 18 months.
02
One hreflang graph generated from the property database, not hand-written per site: region-coded locales, reciprocal alternates, x-default to the English page, and XML hreflang sitemaps validated nightly.
03
Daily log ingestion before, during and after each cutover. Googlebot hits on old URLs, redirect targets and new folders were tracked so a stalled recrawl showed up in hours, not weeks. Calendar parameters were blocked from crawl.
04
A single page template replaced 212: a static first image with proper sizing, the booking widget deferred until interaction, and per-hotel image budgets. Field data monitored per locale folder.
04Ride the migration
Arrow keys ride the lift.
Lobby · the whole group
Before
40 hostnames, four CMSs, seven countries, 8,900 hreflang errors and no shared template.
After
vellmarhotels.example with one locale folder per market, 61,400 one-hop redirects and a clean hreflang graph.
Press a floor button to ride up through the seven country waves.
05Month by month
Months 1–3
Full crawl of 40 hosts, 12 weeks of logs, hreflang and CWV baselines, revenue per URL from booking data.
Months 4–6
URL inventory and redirect map, locale architecture, hreflang generator and the shared template built on staging.
Month 7
Full staging migration crawled against live; 1,840 mapping fixes; rollback plan signed off with each country team.
Months 8–14
One country per month, Austria first, Croatia last. Each cutover watched in the logs for 21 days before the next.
Months 15–18
Old hosts retired to redirect servers, consolidated authority put to work: new city and offer pages, internal linking across markets.
06Results
Organic bookings (post-migration)
+58%
2,500 → 3,950 bookings / month
Redirects mapped
61,400
One hop each, by country wave
Traffic dip at cutover
-3% (recovered in 9 days)
Hreflang errors
8,900 → 0
Validated nightly across 280 locale pairs
Modelled scenario for a fictional business — not a client result. Rankings and traffic are never guaranteed; see our Terms.
Core Web Vitals, field data
Vertical rule marks the “good” threshold.
| Query | Market | Microsite | Cutover week | Month 18 |
|---|---|---|---|---|
| hotel wien stephansplatz | AT | #6 | #7 | #2 |
| boutique hotel salzburg altstadt | AT | #9 | #9 | #3 |
| hotel münchen zentrum | DE | #14 | #16 | #5 |
| designhotel berlin mitte | DE | #11 | #12 | #4 |
| hotel zürich altstadt | CH | #8 | #8 | #3 |
| hôtel genève bord du lac | CH | #12 | #13 | #4 |
| hotel merano centro | IT | #7 | #8 | #2 |
| hotel praha staré město | CZ | #15 | #15 | #6 |
| budapest spa hotel | HU | #10 | #11 | #4 |
| hotel dubrovnik old town | HR | #13 | #14 | #5 |
Top-three keywords across the group: 382 → 664. Bookings by country: AT +60%, DE +56%, CH +61%, IT +57%, CZ +55%, HU +54%, HR +62%.
Planning a migration, a domain consolidation or a multi-market rebuild? Start with the Signal plan, or tell us what you are moving.