Site Migration SEO That
Preserves Every Ranking
A site migration — domain change, CMS move, HTTPS transition, or URL restructure — is the highest-risk SEO event your site will undergo. Without specialist oversight, organic traffic losses of 30–60% are common and can persist for 6–18 months. We engineer migrations that protect crawl equity, redirect authority, and index continuity from day one.
What goes wrong in every unmanaged site migration
Broken Redirect Mapping
Missing or misconfigured 301 redirects leave indexed URLs resolving as 404 errors. Every orphaned page represents PageRank accumulated over years permanently lost — and every 404 flagged in Google Search Console compounds crawl budget waste.
Index Continuity Failure
Conflicting signals between canonical tags, robots.txt, XML sitemaps, and internal links cause partial de-indexation that persists for months. Google receives contradictory instructions and systematically drops pages it cannot confidently treat as indexable.
Authority Dilution via Redirect Chains
Each redirect hop degrades PageRank transfer to the destination. A migration without chain consolidation is permanently leaking authority from every backlink the domain has ever earned — with no visible signal in standard analytics.
Our Site Migration SEO Strategy
Pre-Migration SEO Audit & Baseline
Every migration engagement begins with a complete pre-migration baseline — a full crawl capturing every indexed URL, organic keyword ranking, backlink profile by source URL, canonical structure, internal link graph, schema implementation, and Core Web Vitals. This baseline is the reference document against which every post-migration recovery metric is measured.
- Full URL inventory & indexation status
- Keyword ranking baseline per URL
- Backlink profile & authority map
- Core Web Vitals & crawl budget
Redirect Mapping & Chain Consolidation
A comprehensive old-to-new URL redirect map for every indexed page — verified against canonical logic, sitemap declarations, and internal link destinations. Every redirect chain collapsed to a single hop. Tested on staging and re-verified live within 24 hours of launch.
Canonical & Index Continuity
We verify canonical tag implementation on every new URL — ensuring no conflicts exist between canonical, noindex, and sitemap declarations. Index continuity confirmed via Search Console coverage monitoring post-launch.
Staging Validation & Sign-off Protocol
Before any migration goes live, we conduct a full SEO sign-off on the staging environment — redirect logic, canonical integrity, robots.txt, sitemap accuracy, internal link updates, schema re-implementation, and JavaScript rendering fidelity. Issues found in staging cost nothing to fix. Issues found post-launch can cost months of recovery.
- Staging SEO audit
- Redirect chain validation
- robots.txt & sitemap check
- Schema & JS rendering
30-Day Post-Launch Monitoring
The 30 days after launch are the highest-risk window. We monitor crawl coverage, indexation velocity, 404 emergence, and ranking movement daily — acting immediately when anomalies surface. Most migration-related drops are fully recoverable if caught within the first two weeks.
Schema & Structured Data Re-Implementation
Schema markup is frequently broken, stripped, or incorrectly regenerated during CMS migrations. We audit your pre-migration schema inventory and ensure every structured data type — Article, BreadcrumbList, FAQPage, Product, Organization — is correctly re-deployed. This preserves your SERP rich result eligibility and AI citation signals post-launch.
"@context": "schema.org",
"@type": "WebPage",
"breadcrumb": {..},
"mainEntity": {
"@type": "FAQPage"
}
}
International & Hreflang Migration
Hreflang re-implementation is the most error-prone element of any international migration. We audit, rebuild, and validate your hreflang structure in staging — ensuring language-country targeting is preserved and no unintended geo-targeting shifts occur at launch.
Post-Migration Recovery Programme
Already experiencing ranking drops from an unmanaged migration? We offer a dedicated recovery diagnostic — identifying root causes such as broken redirects, canonical conflicts, and de-indexed URLs — and implementing a prioritised fix schedule with measurable recovery milestones.
We track every signal before, during, and after every migration
A migration is not a single event — it is a process with a long data tail. Our monitoring stack spans the full lifecycle with daily anomaly checks, automated alert thresholds, and weekly stakeholder reporting.
Daily Crawl Coverage Monitoring
Googlebot crawl rate, coverage speed, and 404 emergence tracked daily in the 30-day post-launch window using Search Console data and server log analysis.
Keyword Ranking Delta Tracking
All pre-migration keyword rankings tracked post-launch at URL level, so drops can be diagnosed to specific redirect failures or indexation anomalies — not attributed to broad algorithm changes.
Backlink Redirect Integrity Verification
High-value inbound links verified post-migration to confirm redirect resolution is functioning and PageRank transfer is uninterrupted across all referring domains.
A six-phase migration engineering process
Migrations fail when SEO is treated as a post-launch consideration. Our engagement begins 8–12 weeks before go-live — because preparation is the only reliable risk mitigation.
SEO Baseline Audit
Complete SEO baseline — every indexed URL, organic rankings, backlink profile by URL, crawl structure, canonical map, schema, and Core Web Vitals. The reference document for all post-migration measurement and redirect mapping decisions.
URL Mapping & Redirect Specification
Old-to-new URL redirect map for every indexed page, canonical alignment, sitemap synchronisation, and internal link update specifications. All chains consolidated to a single hop. Delivered as a developer-ready implementation specification.
Staging Validation & SEO Sign-off
Full SEO sign-off on staging environment — redirect logic, canonical integrity, robots.txt, sitemap, internal link updates, schema re-implementation, and JavaScript rendering fidelity. Sign-off gates go-live.
Go-Live Execution & Immediate Checks
Redirect activation, immediate index coverage verification, Search Console monitoring, and 404 spike detection within the first 48 hours post-launch. Any critical failures escalated and remediated same-day.
30-Day Daily Monitoring Programme
Daily crawl coverage, indexation velocity, 404 emergence, and ranking movement monitoring. Automated anomaly alerts with same-business-day response. Weekly stakeholder reports throughout the window.
90-Day Recovery Report & Handover
Full post-migration performance report: ranking recovery versus baseline, traffic analysis, authority transfer verification, and ongoing recommendations. Transition to business-as-usual SEO or continued engagement.
Planning a migration? Engage SEO support before a single URL changes.
The most common migration mistake is treating SEO as a post-launch task. Engage our migration engineering team 8–12 weeks before go-live — or get a post-migration audit if rankings have already declined.
Site Migration SEO FAQ
Everything you need to know before planning a migration — from timeline expectations to post-migration recovery options.
Every week without diagnosis is a week of compounding loss. Our post-migration audit identifies the root cause and prioritises fixes within 5 business days.
Start 8–12 weeks before your planned go-live. Earlier engagement means more thorough baseline data and more time to validate staging without delaying your launch.
Request pre-migration consultation