best approach to launch a website?

Checklist I use on launch day: - remove any noindex or password left over from staging - https working and http redirecting to it - if it replaces an old site, 301 every old URL to its new equivalent - analytics and Search Console set up, sitemap submitted - test every form and check the emails actually arrive - click through on a phone The redirects are the one that costs people traffic. Launching without them can wipe out years of rankings.