# Firecracker

> Firecracker is AWS's Apache-2.0 open-source microVM monitor (Rust) that underpins AWS Lambda and Fargate; it boots a microVM in about 125ms and uses under 5 MiB of memory overhead per VM.

AWS's open-source microVM monitor powering Lambda and Fargate.

- **Category:** Execution Sandbox
- **License:** Apache-2.0
- **Language:** Rust
- **Self-hosted:** Yes
- **GitHub stars:** 37138 (2026-10-04)
- **Repository:** https://github.com/firecracker-microvm/firecracker
- **Last verified:** 2026-10-04

Source: https://agent.c8.fit/tools/firecracker/