I have SO MANY opinions on the state of on/off ramp infrastructure -- likely going to write an extensive post relaying our journey. Fundamentally, today, you're trading off cost vs. coverage vs. implementation speed/support. Not fantastic options (today) but there are promising up and comers!

building parallax.to - crypto biz payments & payouts to global teammates, vendors & contractors

Real World Ethereum 🌎 
building /daimo ✳️ 

currencies and conversion use cases. fiat => crypto vs other way around, also specific coins and chains.  pretty spotty even just in the realm of usd pegged coins.

yup. also coverage of locales (e.g. local payment methods and country jurisdictions)