We are amid a similar switch from Azure to Fly.io and it is a smooth sailing so far. The best aspects of fly.io are 1) effortless multi-regional deployments 2)

We are amid a similar switch from Azure to Fly.io and it is a smooth sailing so far. The best aspects of fly.io are 1) effortless multi-regional deployments 2) technological freedom 3) price. For example: Azure = $140, Fly.io = $10 for the same deployment. We are in love with those guys and gals. But it's not all sunshine and roses. Some fly.io users have intermittent problems during deployments (see forum). I believe those issues will be rectified and improved with time.