Fly.io

Fly.io is an application hosting platform that runs Docker containers on hardware distributed across 30+ regions worldwide. Founded in 2017, the company provides persistent VMs with full Linux access, low-latency global deployment, and developer-friendly infrastructure that fills the gap between traditional cloud VMs and serverless platforms.

Fly.io is particularly well-suited for AI applications that need persistent connections (WebSockets, Server-Sent Events), background processing, and low-latency global distribution. The platform supports GPU instances for AI inference, persistent volumes for model storage, and private networking between services. Developers can deploy AI-powered applications that run close to users worldwide with a single configuration file.

The company has raised significant venture funding and serves a growing community of developers building real-time applications, AI services, and edge computing workloads. Fly.io's combination of global distribution, persistent servers (not cold-starting serverless functions), and built-in databases makes it a popular choice for AI applications that need reliable, always-on infrastructure with predictable performance.