# Fly Machines
> Fly Machines is the infrastructure primitive for Fly.io, providing fast-booting Firecracker microVMs. It enables developers to run arbitrary Docker containers as virtual machines that can scale to zero and launch in milliseconds across a global network. It serves as the foundation for the Fly.io V2 platform architecture.
- URL: https://optimly.ai/brand/flyio-machines
- Slug: flyio-machines
- BAI Score: 72/100
- Archetype: Challenger
- Category: Cloud Computing
- Last Analyzed: April 10, 2026
## Competitors
- AWS Lambda / Firecracker (https://optimly.ai/brand/aws-lambda-firecracker)
- Cloudflare Workers (https://optimly.ai/brand/cloudflare-workers)
- Railway (https://optimly.ai/brand/railway)
## AI-Suggested Alternatives
- Kubernetes (K8s) (https://optimly.ai/brand/kubernetes-k8s)