How To Manage Developers During An SEO Migration | Lilliam Purge

How to manage developers during an SEO migration

I run a digital marketing agency and I also own businesses where a poorly managed SEO migration has a direct impact on revenue, enquiries and trust. From experience, the technical side of a migration is rarely the biggest risk. The biggest risk is communication. More specifically, how SEO requirements are communicated to developers, how priorities are agreed and how decisions are made under time pressure.

In my opinion, most SEO migrations fail not because developers do a bad job, but because developers and SEO teams are solving different problems at the same time without a shared framework. Developers are focused on functionality, performance, security and deadlines. SEO teams are focused on continuity, relevance and trust. When those perspectives are not aligned, critical details fall through the cracks.

This article explains how to manage developers during an SEO migration in a practical, realistic and collaborative way. It is written from real world UK experience working with in house developers, agencies, freelancers and platform partners across small businesses and large organisations. The aim is not to turn developers into SEOs or SEOs into developers, but to help both work together without friction or loss of visibility.

Why SEO migrations break down at the people level

Most migrations start with good intentions.

From experience, everyone wants the same outcome. A better site, improved performance and no loss of traffic. The problem is that SEO migrations are cross disciplinary projects, and cross disciplinary projects fail when responsibilities are unclear.

Developers often assume SEO requirements are cosmetic or optional. SEO teams often assume developers understand search implications implicitly. Neither assumption is correct.

A migration succeeds when SEO requirements are treated as functional requirements, not afterthoughts.

Developers are not the enemy and SEOs are not blockers

This mindset matters.

From experience, tension builds quickly when SEO teams are perceived as slowing down delivery or when developers feel blamed for ranking drops. This dynamic is toxic and unnecessary.

Developers are usually solving complex problems under time pressure. SEO teams are trying to protect long term value that is often invisible during development.

Managing developers well means respecting their expertise while clearly communicating why SEO constraints exist.

Mutual respect is the foundation of a successful migration.

Why developers need context not just instructions

One of the biggest mistakes I see is giving developers a list of SEO tasks without explaining why they matter.

From experience, instructions like implement 301 redirects or preserve URL structure mean very little without context.

Developers are problem solvers. They need to understand the consequence of decisions.

When developers understand that changing a URL without a redirect can erase years of accumulated authority, they are far more likely to prioritise it correctly.

Context turns SEO requests from arbitrary rules into logical requirements.

Establish SEO as a non negotiable requirement early

Timing is critical.

From experience, SEO must be introduced at the very beginning of the migration, not just before launch. If SEO requirements are added late, developers are forced to retrofit solutions, which increases risk and resentment.

SEO should be treated like security or performance. It is not optional and it is not cosmetic.

I always recommend that SEO requirements are documented and signed off alongside technical requirements at the start of the project.

Define ownership clearly before work begins

Ambiguity kills migrations.

From experience, everyone assumes someone else is handling redirects, metadata, internal linking or testing.

Clear ownership must be defined. Who is responsible for redirect implementation. Who signs off URL changes. Who verifies indexation. Who checks post launch performance.

If ownership is unclear, critical tasks are missed.

Managing developers effectively starts with defining roles and responsibilities explicitly.

Translate SEO requirements into developer language

SEO language and developer language are not the same.

From experience, telling a developer that Google needs to understand page importance is vague. Telling them that internal links determine crawl priority is clearer.

SEO requirements should be translated into concrete technical outcomes. For example, preserve existing URL paths, implement one to one 301 redirects, ensure canonical tags point to new URLs, avoid orphaned pages.

When SEO is expressed as technical acceptance criteria, developers can work with it confidently.

Avoid SEO jargon unless it is understood

SEO jargon creates friction.

From experience, terms like link equity, crawl budget or semantic relevance can confuse or irritate developers if not explained.

This does not mean avoiding technical accuracy. It means framing requirements in terms of system behaviour.

For example, explain that redirects transfer signals from old pages to new ones rather than talking abstractly about equity.

Clarity reduces resistance.

Bring developers into the SEO risk conversation

Developers are often unaware of the scale of SEO risk.

From experience, showing examples of traffic loss from failed migrations or explaining how long recovery can take changes perspective quickly.

This is not about fear mongering. It is about risk awareness.

When developers understand that a missed redirect can cost the business thousands of pounds over months, priorities shift.

Shared understanding leads to better decisions.

Involve developers in the content and URL mapping stage

SEO migrations often involve content consolidation and URL changes.

From experience, developers are frequently excluded from these discussions, then asked to implement complex mappings late in the process.

This is inefficient.

Developers should be involved early in URL mapping discussions so they understand the scope and logic.

This allows them to plan implementation cleanly and flag technical constraints early.

Why URL decisions must be locked early

Changing URLs late is dangerous.

From experience, developers sometimes propose cleaner URLs late in the project when they see the new structure taking shape.

While the intention is good, late URL changes create cascading SEO risk.

Managing developers means agreeing early which URLs are fixed and which can change.

Once locked, URL decisions should not be revisited unless absolutely necessary.

Redirects are not optional or secondary

Redirects are often underestimated.

From experience, developers sometimes treat redirects as a nice to have, especially when timelines are tight.

This is one of the most common causes of SEO failure.

Redirects must be implemented fully and tested thoroughly. Partial redirect coverage is worse than none because it creates unpredictable losses.

Managing developers means reinforcing that redirects are core infrastructure, not a post launch tidy up.

Why one to one redirects matter and must be explained

Not all redirects are equal.

From experience, developers sometimes suggest redirecting many old pages to a single new page to save time.

This breaks relevance continuity.

SEO requires one to one redirects where intent matches. Developers need to understand that relevance matters as much as technical correctness.

Explaining intent preservation helps developers appreciate why shortcuts are risky.

Avoid relying on wildcard redirects

Wildcard redirects are tempting.

From experience, they appear efficient but often cause subtle problems. They can send users and search engines to less relevant destinations without warning.

Managing developers includes pushing back on wildcard solutions unless they are carefully scoped and tested.

Efficiency must not override precision.

Internal linking must be treated as part of development

Internal links are often ignored in migrations.

From experience, developers assume redirects will handle old links and do not update internal linking.

This weakens SEO signals and wastes crawl resources.

Managing developers means making internal link updates part of the development scope, not an SEO clean up task.

Internal links should point directly to final URLs wherever possible.

Canonical tags are a common failure point

Canonical handling is frequently misunderstood.

From experience, developers may inherit canonical logic from templates without checking whether it applies post migration.

Incorrect canonicals can cause Google to ignore new pages or continue favouring old ones.

SEO teams must specify canonical requirements clearly and developers must validate implementation.

This is an area where close collaboration is essential.

Staging environments should include SEO checks

Staging is not just for visual review.

From experience, SEO checks must be part of staging sign off. This includes checking noindex tags, robots directives, canonical tags, URL structure and internal linking.

Developers often leave noindex tags in place intentionally on staging. This is correct.

The risk is forgetting to remove them before launch.

Managing developers includes defining a clear pre launch checklist that includes SEO items.

Never assume production behaves like staging

Production environments differ.

From experience, configuration differences, caching layers or server rules can behave differently on live.

SEO checks must be repeated immediately after launch.

Developers should expect post launch validation, not treat launch as the end of the project.

This expectation should be set early.

Page speed improvements must be measured not assumed

Developers often optimise for speed.

From experience, claimed speed improvements do not always materialise in real world metrics.

SEO teams should define which metrics matter and how they will be measured.

Developers should validate improvements against those metrics.

This avoids disagreements based on assumptions.

Mobile behaviour must be tested collaboratively

Mobile issues are common post migration.

From experience, developers test functionality, SEO teams test usability. Both perspectives matter.

Text size, tap targets, navigation and load times should be reviewed together.

Managing developers means creating shared testing responsibilities rather than siloed checks.

Analytics and tracking are part of the migration

Analytics often break during migrations.

From experience, developers may replace templates without re integrating tracking scripts correctly.

SEO teams rely on data to evaluate success and recovery.

Tracking requirements must be documented and tested as part of the migration.

A migration without data is impossible to evaluate.

Search Console setup should be planned in advance

Search Console is critical post migration.

From experience, new properties are often set up late or incorrectly.

Developers should understand when new properties are required and how verification works.

SEO teams should plan monitoring tasks in advance.

Coordination here speeds up issue detection.

Post launch monitoring should be agreed in advance

Post launch is where tension often arises.

From experience, developers consider the project complete at launch. SEO teams see launch as the beginning of the riskiest phase.

This mismatch causes frustration.

Managing developers means agreeing upfront that post launch monitoring and fixes are part of the project scope.

Clear timelines and responsibilities prevent conflict.

How long developers should stay engaged post launch

This is a practical issue.

From experience, developers should remain engaged for at least two to four weeks post launch to address critical issues.

SEO migrations often surface issues only after Google starts crawling and indexing the new site.

Expecting developers to disappear immediately after launch increases risk.

How to handle disagreements professionally

Disagreements will happen.

From experience, the worst thing SEO teams can do is frame disagreements as developer mistakes.

Issues should be discussed in terms of outcomes and risks, not blame.

When developers push back on SEO requests, ask why. There may be valid constraints.

Collaboration solves more problems than confrontation.

Use documentation as a neutral reference point

Documentation reduces emotion.

From experience, having agreed documents for URL mapping, redirect lists and acceptance criteria prevents arguments.

When everyone refers to the same document, decisions feel objective.

Managing developers well often means managing documentation well.

Avoid scope creep disguised as SEO changes

SEO migrations are not an excuse to change everything.

From experience, adding new requirements late under the banner of SEO causes resentment.

SEO changes should be planned, scoped and justified.

Unexpected demands erode trust.

Balance perfection with pragmatism

Perfection is unrealistic.

From experience, not every SEO ideal can be implemented in every migration.

Managing developers means prioritising what truly matters and accepting trade offs where necessary.

This requires judgement, not dogma.

Educate rather than police

The most successful migrations involve education.

From experience, when developers understand SEO principles, they proactively avoid problems.

Policing creates resistance. Education creates alignment.

Invest time in explaining the why, not just the what.

Recognise developer wins publicly

Positive reinforcement matters.

From experience, acknowledging good SEO implementation builds goodwill.

When developers see that SEO teams appreciate their effort, collaboration improves.

Authority comes from partnership, not hierarchy.

Learn from each migration

Every migration teaches lessons.

From experience, post migration reviews help improve future processes.

Discuss what went well, what did not and how communication can improve.

This turns painful experiences into long term capability.

SEO migrations are leadership tests

Managing developers during an SEO migration tests leadership.

From experience, calm communication, clear expectations and mutual respect make the difference between chaos and control.

This is not about technical skill alone. It is about coordination.

Why calm management beats micromanagement

Micromanagement creates friction.

From experience, trust combined with clear checkpoints works better.

Set clear standards, review at agreed points and intervene only when necessary.

This respects developer autonomy while protecting SEO.

When to escalate issues

Some issues require escalation.

From experience, if critical SEO requirements are being ignored and risk is high, escalation may be necessary.

This should be done professionally and with evidence, not emotion.

The goal is resolution, not blame.

Align migration goals with business goals

SEO migrations should serve the business.

From experience, aligning goals such as lead protection, revenue stability and growth helps developers understand why SEO matters.

When SEO is framed as business protection rather than marketing preference, buy in increases.

Final thoughts

From experience, knowing how to manage developers during an SEO migration is as important as knowing SEO itself.

Most migration failures are communication failures, not technical ones.

If there is one key takeaway from this article, it is this. SEO migrations succeed when developers and SEO teams work as partners with a shared understanding of risk, responsibility and outcomes.

Clear communication, early involvement and mutual respect turn migrations from stressful events into opportunities for improvement.

When developers are managed thoughtfully rather than reactively, SEO migrations protect value, maintain trust and often emerge stronger than before.