Fly.io
Public cloud for developers — Docker apps deployed to a 35+ region Anycast network with sub-second cold starts.
Developer Tools
📍 Chicago, IL
Founded 2017
Current Valuation
$397M
as of 2023
PRIVATE
Fly.io runs Docker apps on a globally distributed network of 35+ regions, with sub-second cold-start microVMs (Fly Machines), managed Postgres clusters, and distributed SQLite replication (LiteFS). Pioneered the 'deploy your app close to users' wave that Vercel + Cloudflare formalized. Notable customers: Anthropic uses Fly for Claude Code sandbox infrastructure.
Company Profile
Growth
~47% YoY ($11.2M 2024 vs $7.6M 2023)
Last Round
Series B — $70M (Jul 2022) · Lead: EQT Ventures
IPO Status
no imminent plans
Founders & Key People
Kurt MackeyThomas PtacekSteve Berryman
Investors
EQT Ventures · Andreessen Horowitz · Intel Capital · Y Combinator · Dell Technologies Capital · GV · Initialized Capital · SV Angel
Products
- Fly.io platform (Docker apps, 35+ regions)
- Fly Machines (Firecracker microVMs, sub-second boot)
- Fly Postgres (managed PG with read replicas)
- Fly Volumes (block storage)
- LiteFS (distributed SQLite replication)
- Fly Wireguard (private mesh networking)
Competitors
Render · Railway · Heroku (Salesforce) · Cloudflare Workers (NET) · AWS App Runner (AMZN) · Vercel
Developer PlatformCloud InfrastructureEdge Compute
Private-company numbers are not real-time. Reflects publicly disclosed valuations from press releases, news reports, and tender offers as of 2023. Refreshed quarterly.