Top line: a domain migration is not done when DNS starts resolving. It is done when redirects, certificates, canonical tags, public copy, and path preservation all prove the new host is the source of truth.
The migration trap
Cutovers fail quietly when teams check only the homepage. Old hostnames may keep serving stale content, paths may lose query strings, and canonical tags may continue pointing at the retired brand.
KENSAI treats a domain cutover as a proof bundle. Each hostname, important path, and public metadata signal needs a recorded result before the move is called complete.
Minimum proof: primary host returns 200, secondary hosts return 301 to the matching path, certificates are issued, canonicals point at the new domain, and public labels match the chosen brand.
Why this matters for security
- Wrong redirects can strand users on stale origins.
- Certificate gaps can create avoidable outage windows.
- Mixed canonicals can split search authority and confuse monitoring.
- Unverified path handling can break docs, reports, and customer evidence links.
Bottom line
Domain cutovers need proof, not hope. A migration with measured redirects and verified metadata is less dramatic, which is exactly what a production change should be.