Fly.io
More info
- Founder
- Kurt Mackey, Steve Berryman, Jerome Gravel-Niquet
- Founded
- Type
- Globally distributed app hosting (Firecracker microVMs)
- Website
- fly.io
"Heroku that flies globally" — runs Docker apps in Firecracker microVMs across 35+ regions with automatic anycast routing.
Pitch: fly launch + fly scale count 3 --region ams,sjc,sin = global deploy. Uses Firecracker (the AWS Lambda VMM). Had dramatic incidents 2022–2024 (volume data loss, security holes) but blogs transparently about them. Phoenix LiveView and the Elixir community love them — Chris McCord (Phoenix) works there. Competitors: Railway, Render, AWS App Runner.