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.