AWS Lambda MicroVMs is a serverless compute primitive that combines VM-level isolation, near-instant launch and resume, and state persistence across interactions. Built on the same Firecracker virtualization powering 15 trillion+ monthly Lambda invocations, MicroVMs are purpose-built for workloads that execute user- or AI-generated code.

Start a MicroVM, connect over HTTP, and begin executing code for your AI or human users. No infrastructure to manage, no capacity to plan, no isolation expertise required. Each MicroVM preserves full memory and disk state for up to 8 hours, suspends automatically when idle, and resumes on demand. MicroVMs can vertically scale up to 4x your configured baseline resources during peak periods.

MicroVMs support multi-tenant workloads with dedicated URLs and JWE-based authentication per tenant, with Lambda managing network routing and isolation. Each tenant runs on an isolated kernel, memory space, and disk state.