Runtime Roundup: VM Sandboxes, Multi-node clusters, and more | Modal Blog

Introduces VM Sandboxes, providing agents with full Linux computer access for running Docker stacks, local databases, dev servers, graphical environments, and kernel interaction. Also introduces Sandbox Sidecars, containers running alongside main sandboxes on the same host with the same isolation, enabling trusted operations to run in a Sidecar inaccessible to the agent, with local communication to avoid network round trips.