Export current URLs and map each to a destination: direct 301, merge with a stronger page, or deliberate retirement with a thoughtful replacement. Broken chains and soft 404s add up fast.
Staging sites should block indexing; production should ship XML sitemaps, canonical tags, and clean robots rules. Confirm analytics and Search Console carry forward.
After launch, monitor crawl errors, coverage changes, and Core Web Vitals on templates—not just the homepage.