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migrate website hosting no downtime
Copy content, match host headers, lower TTL, flip DNS, prove 200. A move is a cutover, not a redesign.
Files copy. Then someone points NS before TLS and host headers are ready.
Inventory. Snapshot. Stand origin on the new host with the public Server Name. Cert. Lower TTL. Flip. Watch 200 from outside.
WordPress table prefix and urls in post_content. Next.js SITE_URL. Docker compose ports. We do not guess.
Tell us the eviction time.