SEO Migration Consultant for B2B and SaaS — France & Europe
Specialist seo website migration consulting based in France, serving B2B companies across Europe.
Website migrations are one of the most SEO-sensitive events in the life of a business. Handled incorrectly, they can result in massive ranking drops, broken links, crawl errors and long-term visibility loss.
I help companies migrate websites while minimizing losses in organic visibility, crawl capacity, and authority signals.
SEO MIGRATIONS:
Pre-migration SEO audit
Risk analysis
Multi-step migrations
Consolidations
SERVICES:
Migration validation
Redirection roadmap
SEO migration checklist
Site migration plan
CONSULTING & SUPPORT:
URL structure planning
Site migration timeline
Platforms migration
Website redesign
Website Migration is a controlled SEO risk
Website migration is never a winning bet SEO-wise. The goal is not to gain, the goal is to avoid losing.
Website migration is rarely done for SEO reasons.
Most migrations are triggered by business decisions:
From an SEO perspective, migration is almost always a risk event.
Why SEO risk appears during migration?
Risk Pyramid of SEO Migration
Migration temporarily disrupts the interface between your site and Google.
Three key systems are affected:
When these systems change simultaneously, instability appears.
Organizational Complexity Increases Risk
Migration is rarely a single-team project.
It usually involves:
- product teams,
- developers,
- marketing,
- design teams,
- infrastructure teams.
As the number of participants increases, the probability of error increases.
Timing Risk: The Algorithm Update Factor
Migration timing matters.
If a migration coincides with a Google algorithm update:
- signal recalibration occurs simultaneously,
- ranking volatility increases,
- diagnosis becomes difficult.
Algorithm updates now occur more frequently, which increases timing risk.
Five Types of Website Migration
Each migration type carries a different level of SEO risk.
1. Server Migration
Moving the site to a new hosting infrastructure.
Typical risks:
Risk level: Low to moderate.
2. Website Redesign
Structural and layout changes.
Typical risks:
Risk level: Low to moderate.
3. URL Migration
Changes to page URLs.
Typical risks:
Risk level: High.
Risk level: High.
4. Technical Platform Migration
Example: WordPress → headless CMS.
Typical risks:
5. Domain Migration
Moving to a new domain.
Typical risks:
Risk level: Very High.
Discover more:
Discussion:
The SEO implications of Website migration
I analyse 5 types of migration, discuss business reasoning behind site migrations, suggest 3 biggest SEO problems related to migrations. Discussion of the SEO impact of website migration offers a framework of scenario analysis as well as a template for assessing the potential SEO casualties.
How Migration Connects to Technical SEO?
SEO migration is a temporary stress test for the organic acquisition funnel.
It combines risks from:
technical SEO
authority signals
crawl efficiency
SEO MIGRATION SITE CONSULTATION:
I Preserve Your Rankings and Protect Your Traffic, so you can Migrate with Confidence.
I help you plan and execute migrations the right way, with a tailored SEO consultation covering every step: before, during, and after launch.
My SEO Migration Risk Framework
My role is to stabilize the Organic Acquisition Funnel during migration.
This includes three stages.
1. Risk Mapping
Before migration begins I detect high-risk loss zones:
2. Migration Architecture
Design the migration structure.
Key elements:
3. Post-Migration Stabilization
After launch:
What Does an SEO Migration Consultant Do?
SEO Implication Analysis
- Audit of current SEO performance & key URL assets.
- Crawl depth & index status mapping.
- Risk analysis based on type of migration.
Migration Policy & SEO Checklists
- Custom migration policy document for your dev, product & SEO teams.
- Technical pre-launch and post-launch SEO checklists.
- Redirection governance and tracking methodology.
Migration Plan & Timeline
- Critical path planning: who does what and when.
- Alignment with development and staging timelines.
- Testing and validation gates before go-live.
Redirection Strategy & Roadmap
- Multi-step redirect mapping (e.g., old → new structure).
- Grouping of redirects (blog, category, landing pages).
- Avoiding redirect loops, chains, and loss of PageRank.
eCommerce Taxonomy Consulting
- For B2B eCommerce: ensuring CPV logic is maintained.
- Clean URL restructuring by Category → Property → Value.
- Canonical, faceted navigation, and duplicate content risk mitigation.
Post-Migration SEO Audit & Monitoring
- Crawl and index validation.
- Broken links, redirect mapping performance.
- Visibility trend comparison (before vs. after).
- Custom report with key findings & next-step recommendations.
Consultancy Matrix: SEO Migration
Migration Risk | Strategic Decision | Nertis Program / Module | Subsystem | Growth Effect |
|---|---|---|---|---|
Redirect chains or missing redirects | Build complete redirect architecture | Redirect Mapping Module | Acquisition | Preserve authority signals |
Important URLs lost during migration | Create URL inventory and mapping | URL Migration Planning | System Layer | Preserve ranking pages |
Crawl inefficiencies after launch | Optimize crawl paths | Crawl Stabilization | Acquisition | Faster reindexation |
Internal linking broken | Rebuild internal link architecture | Internal Link Reconstruction | System Layer | Restore ranking signals |
Authority dilution after domain change | Authority signal consolidation | Domain Migration Recovery | Acquisition | Faster ranking recovery |
Typical Scenarios Where I Help
Rebranding and Domain Change
RISK:
Authority dilution.
Platform Migration
RISK:
indexation disruption.
Website Redesign
RISK:
internal linking collapse.
Who This Is For?
Ideal Clients:
Founder-led B2B SaaS companies where:
- Product is moving platforms
- Redesign or moving to a new domain
- Consolidation of several microsites or subdomains.
- Post M&A migrations: merging sites in the wake of acquisitions.
- International sites are moved under the same domain.
Not for:
My SEO migration Consultancy is not for:
- Black-hat domain authority consolidation
- Quick fixes without structural change
Bohdan Lytvyn, Nertis
I secured support with non-technical decision makers that defended 300k clicks per month in the process of a large websites’ migration post acquisition by Alibaba Group.
Request SEO Migration Risk Assessment before migration begins. Early diagnosis prevents irreversible losses.
Clients
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Why Nertis?
Led by Bohdan Lytvyn, a 17-year SEO veteran:
Former Senior SEO at Alibaba’s European sub
Expertise in large-scale enterprise sites
Author of "Wasteless Growth" Book
About Bohdan Lytvyn
Full background and approach — bohdanlytvyn.com
Bohdan Lytvyn
"WASTELESS GROWTH" BOOK AUTHOR
17 years in SEO and growth strategy. Former Senior SEO Manager at Alibaba's European subsidiary. Worked with B2B marketplaces, SaaS platforms, eCommerce businesses, and digital-first companies across Europe.
Based in Paris. Working in English and French.
I don't run an agency that assigns you to a junior team. I'm the person who does the diagnostic, designs the strategy, and delivers the work.
SEO Migration Consulting Pricing Packages
Pre-Migration
Crawl/index audit, basic recommendations, robots.txt/sitemap/metadata review