Running Umami analytics for free on Vercel and Supabase

I have never used Google Analytics on my personal websites. It always felt far too invasive and complicated for what I actually wanted to know: whether anyone reads my articles, which pages people visit, and where they came from.
For a while I used Simple Analytics. It was privacy-friendly and did exactly what I needed, but it was still somebody else’s analytics service. I wanted to try running something under my own control instead.