Two pages to keep open while configuring a store or preparing it for launch. The settings reference gives each commerce setting its admin label, default and effect, and says whether staging and production should differ. The provider reference covers each payment, tax and shipping provider: what it does, what it is configured with, how to test it and what to check before go-live.

Both are for looking things up. How each setting and provider fits into a build is on the guide's other units, and each entry links to the page that explains it.