A pass is forty checks and their fixes: how the site is crawled and indexed, how fast it paints and responds, whether its structured data, sitemaps and share cards say what they should, where links are broken and redirects missing, and whether someone using a screen reader or a keyboard can get through it. The fixes are applied, not listed in a document for someone else to do.
We work on sites we did not build and do not need to move them. The pass runs against the site where it lives, on whatever platform it was made with.