Who is Fly.io best for?

Best use cases for Fly.io

• Teams deploying containerized applications that need global distribution with minimal configuration — Fly.io's anycast routing runs your containers close to users in 30+ regions without complex CDN setup.
• Applications with spiky or unpredictable traffic patterns where Fly.io's scale-to-zero capability reduces idle compute costs compared to always-on VMs.
• Developers who want the simplicity of a PaaS (deploy from Dockerfile, automatic TLS, built-in Postgres) but need more control over networking, volumes, and multi-region configuration than Heroku or Render provide.

Who should avoid Fly.io?

• You need full VM-level control and enterprise governance patterns
• Your networking/runtime needs don’t fit the platform model
• Different operational model than hyperscaler primitives; learning curve

Upgrade triggers for Fly.io

• Need to standardize multi-region strategy without building bespoke infra
• Need managed deployment workflows for small teams
• Need a global placement model because latency and multi-region presence become product requirements

Next steps