firecracker
An open-source virtualization technology that creates secure, lightweight microVMs for container and serverless workloads.
What is firecracker?
Firecracker is an open-source virtualization technology that creates and manages secure, multi-tenant container and function-based services using lightweight virtual machines called microVMs. It combines the security and isolation of hardware virtualization (KVM) with the speed and efficiency of containers, enabling serverless operational models. Originally developed at AWS to power services like AWS Lambda and AWS Fargate, it is designed for minimal-overhead execution at scale.
Cloud infrastructure engineers and platform teams building secure, multi-tenant serverless or container-based services that require hardware-level isolation with low overhead. It is also suitable for developers integrating lightweight virtualization into container runtimes like Kata Containers.
Developers choose Firecracker for its minimalist design that maximizes security and speed by excluding unnecessary devices, reducing memory footprint and attack surface. Its production-ready features, such as the Jailer process for isolation, comprehensive API for resource configuration, and support for hot-pluggable resources, make it uniquely suited for efficient, large-scale serverless environments.
Overview
Secure and fast microVMs for serverless computing.
Use Cases
Best For
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