The situation
Every client migration I worked on at Thinkmax carried a long list of configuration choices to track, confirm, test, and eventually hand off. I kept all of it in an Excel file as I went, every setting and change for that client in one place.
What I did
Once a configuration was confirmed, tested, and documented, I used a mail-merge-style setup to turn that tracked data into clean tables and data points automatically. The output was a documentation guide I could hand to the client's own IT team, so they had a complete reference to the settings and deployment considerations for their environment, generated from the same source of truth I'd been working from rather than written up separately after the fact.
The result
It paid off twice. The guide was a real handover product, consistent every time instead of an afterthought. And because everything was laid out in one place before it was generated, it doubled as a review step, a chance to check the configurations and choices before they were committed.