At Microsoft Build 2026 developer conference, Microsoft announced a comprehensive optimization of the developer experience for Windows 11, along with a series of new tools and platform updates. This optimization covers multiple aspects, aiming to enhance developer efficiency and experience. Firstly, Microsoft has integrated commonly used command-line utilities and introduced a comfortable Shell along with a faster installation experience. Additionally, Windows 11 now includes built-in Linux container operation capabilities and has experimentally launched the Intelligent Terminal. Microsoft officially released Coreutils for Windows, implemented in Rust based on the uutils project, enabling Linux-like command-line tools to run natively on Windows. Meanwhile, Microsoft has integrated the Windows Subsystem for Linux (WSL) into Windows 11 and introduced WSL containers, which will be available for public preview in the coming months. The Intelligent Terminal, based on the existing Windows Terminal, provides intelligent agent context support through ACP, with full functionality and native CLI integration, offering developers a more intelligent terminal experience. In terms of development environment configuration, Windows Developer Configurations enables rapid setup through WinGet configuration files, while the public preview of Windows 365 with Developer configuration provides a cloud-based pre-configured development environment, further simplifying the development process. Microsoft also released an early preview of the Microsoft Execution Containers (MXC) SDK, which provides a policy-driven execution layer, supports resource access control and multiple isolation methods, and can assign identities to agents and integrate security tools. Additionally, Microsoft has collaborated with ecosystem partners such as OpenClaw, NVIDIA, and Hermes Agent. In the realm of on-device AI, Microsoft introduced the smaller and faster Aion 1.0 Instruct model, with its open-source weights to be released in July, along with the Aion 1.0 Plan model featuring 14 billion parameters. Furthermore, Microsoft has added a device-side speech recognition API and extended the Windows AI API to run on both CPUs and GPUs. In terms of hardware, Microsoft unveiled the Surface RTX Spark Dev Box, which will be exclusively available later on the US official website, and the DGX Station for Windows, set to launch in the fourth quarter. The Microsoft Store has also been updated to support accelerated onboarding with Entra ID, reduce certification time, and provide real-time analytics, offering developers a more convenient application publishing and management experience. On the security front, Microsoft has strengthened post-quantum cryptography support, phased out outdated authentication methods, raised the security bar for driver signing, and expanded the coverage of Smart App Control and App Control for Business, providing developers with a more secure and reliable development environment.