Docker Launches New First-Party Virtualization Layer for Docker Desktop

Introduction of Docker VMM

Docker has introduced Docker VMM (virtual machine monitor), a new first-party virtualization layer for Docker Desktop. This new component replaces previous third-party virtualization solutions, allowing Docker to directly control and optimize the engine specifically for container workloads. The public beta is available with Docker Desktop 4.86 for macOS and Windows.

Performance and Stability Improvements

The new virtualization layer is designed to bring performance, stability, and governance improvements. Docker states that container startup is now faster across various scenarios, including initial launch, project switching, and restart recovery. File sharing between containers and the host has also been enhanced, particularly benefiting edit-compile-test workflows. Additionally, Docker VMM improves memory efficiency by returning unused memory to the host when containers are idle.

Enhanced Windows Experience and Future Vision

For Windows users, Docker now owns the virtualization layer, aiming to provide Hyper-V-level isolation with performance closer to WSL2. Docker emphasizes that VMM is not just a performance upgrade but a new foundational architecture for its products. The same virtualization engine will power Docker Sandboxes, extending benefits to traditional Docker workloads and isolated environments for AI agents. The long-term goal is a unified runtime across laptops, cloud, and on-prem for containers, Compose applications, and AI agents.

Availability and Future Plans

Docker VMM is currently included in Docker Desktop 4.86. On macOS, it is automatically enabled, while on Windows, it is an opt-in setting. Docker plans to release general availability with Linux support by the end of October.