AWS Launches Lambda MicroVMs for Isolated Agent and User Code Execution
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AWS Lambda MicroVMs with Firecracker isolation is a major new serverless primitive for agent workloads.
AWS launched Lambda MicroVMs, a serverless compute primitive that runs each user session or AI agent in its own Firecracker VM with hardware-level isolation, snapshot-based rapid launch, and state preservation for up to eight hours. Available in five regions on ARM64 with up to 16 vCPUs, 32 GB memory, and 32 GB disk, MicroVMs target long-running, stateful, multi-tenant applications executing untrusted code—a pattern Lambda Functions was never designed for. The service creates a MicroVM Image from a Dockerfile and code artifact, snapshots the initialized state, and resumes from that snapshot on each run-microvm call, returning a dedicated HTTPS endpoint without load balancers or networking setup.