Amazon Web Services is the creator of Firecracker, an open-source virtualization technology designed to run lightweight, secure microVMs. Firecracker was originally developed to power AWS services such as Lambda and Fargate, focusing on fast startup times, strong isolation, and minimal resource overhead.
The integration between Apache CloudStack and Firecracker is implemented using the CloudStack XaaS Extensions Framework. Firecracker is consumed as an external virtualization backend, allowing CloudStack to orchestrate microVM instances through extension-driven lifecycle operations.
This approach enables CloudStack to manage Firecracker-based workloads without treating Firecracker as a traditional hypervisor, extending CloudStack beyond classic IaaS into lightweight compute use cases such as ephemeral workloads, automation tasks, and specialized application platforms.
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