Shortly after most new sites are launched, the creators discover that some necessary elements have been forgotten. Pilots employ a pre-flight checklist to avoid problems while airborne, so it is only natural that web sites should have a pre-launch checklist to avoid problems once users begin visiting the site.
My latest php|architect article, Pre-Launch Checklist, is more of a detailed checklist than a tutorial, but every topic in the list can easily be Googled for more info if needed.
Topics covered include RAM disk, minify, gzip, semantics, accessibility, favicon, AllowOverride, caching and many more.
The PDF-format May 2009 php|architect is free - enjoy reading the Pre-Launch Checklist!