Site migration
Any change to a site's domain, URL structure, platform, template or content organisation that materially affects how search engines see it.
BusinessCMS migration
Replatforming
Moving a site to a different content management or commerce platform, a migration type where URL patterns, rendering and metadata control all change at once.
In full
The specific SEO risks are platform-imposed URL structures, loss of granular control over canonicals, hreflang and robots directives, changes from server-rendered to client-rendered templates, and default settings that create index bloat. These constraints should be evaluated during platform selection, not discovered after signing. Vendor demos rarely surface them, so a technical requirements list belongs in the procurement process.
Example
A commerce platform forces `/collections/x/products/y` URLs and generates a second canonical path per product, requiring rules before launch.
Related terms
URL structure
The design of a site's URL paths: readable, stable, lowercase, hyphen-separated and free of unnecessary parameters or session identifiers.
JavaScript rendering
The execution of a page's client-side JavaScript by a search engine so that content and links generated at runtime become indexable.
SEO governance
The processes and ownership that keep SEO requirements enforced over time — review gates, standards, documentation and escalation paths.
SEO technical debt
Accumulated unresolved technical issues — legacy redirect chains, duplicate URL patterns, orphaned templates, stale markup — that compound…