Microsoft continues its big Linux push at Build 2026

At Build 2026 Microsoft introduced a set of Linux-focused moves: Azure Linux 4.0, Azure Container Linux, a Windows 11 build tailored for developers with expanded WSL capabilities, and the Surface RTX Spark Dev Box, a high-end AI workstation preconfigured with WSL 2, native GPU passthrough and full Nvidia CUDA support.

Azure Linux 4.0 is a Fedora-derived, RPM-based general-purpose server distribution for Azure virtual machines, positioned as a hardened baseline for cloud-native and AI workloads rather than just Kubernetes underpinnings. Azure Container Linux, built on the Flatcar lineage, is now generally available as an immutable, container-optimized host image for Kubernetes on Azure.

On the desktop, Microsoft is expanding WSL into an "agent-native" OS layer for local AI development, with a frictionless intelligent shell, local sandboxing for agents, and the ability to create and run Linux containers via WSL.

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