Website Migration vs SEO Migration: What Businesses Get Wrong
Why Website Migrations Kill Traffic (And How to Avoid It)
Website migrations are one of the most common causes of sudden traffic loss.
The issue is rarely the redesign itself – it’s what happens to the existing SEO value when a new site goes live.
Rankings don’t transfer automatically. Traffic doesn’t follow your brand. And Google does not “figure it out later”.
Without a structured SEO migration, visibility can drop overnight.
What actually happens when a site migrates
When a website is rebuilt or moved:
- URLs often change
- Content is restructured
- Internal linking shifts
- Metadata is lost or rewritten
From Google’s perspective:
“The site it previously indexed no longer exists in the same form.”
The most common mistake
The most damaging assumption:
“The developer will handle it”
In most cases, they are handling the website migration, not the SEO migration.
Why traffic drops
Traffic drops because:
- Indexed URLs disappear
- Relevance signals change
- Authority is not transferred
- Backlinks point to dead pages
Example Scenario:
- Page ranks for a high-value term
- Drives consistent traffic
- Site relaunches
- URL changes without redirect
- Google removes old page
Result: ranking gone, traffic gone
Redirects Are Not Optional
Redirects tell Google:
“This page has moved—here is the equivalent”
Without them:
- Value is lost
- Rankings reset
Not All Redirects Are Equal
Best Case:
/old-product → /new-product
Acceptable:
/old-product → /category/
Worst Case:
/old-product → homepage
Content and Metadata Matter
Even with correct redirects:
- Changing content too much breaks relevance
- Losing titles/descriptions impacts CTR
- Removing keyword alignment weakens rankings
Backlinks don’t move themselves
If external sites link to: oldsite.com/page-a
And it’s not redirected: Authority is lost completely
It Happens More Often Than You Think
This isn’t limited to small businesses.
We’ve seen it across:
- Global enterprises
- B Corp organisations
- Ecommerce brands
Same outcome every time:
- Traffic drops
- Conversions drop
- Recovery becomes reactive
Use our free SEO Migration Risk Assessment
To evaluate whether your planned changes could impact traffic, rankings and visibility.
