Windows Server 2025 introduced several advancements that make containerized workloads more flexible, secure, and customizable. One notable feature is the addition of Features on Demand (FoD) in Nano Server containers. This feature allows you to customize Nano Server containers by adding only the necessary components while keeping your container images small and optimized. In this guide, we’ll explore how to enable and use Features on Demand within Nano Server containers, providing real-world use cases that demonstrate this feature's power. We will also examine how it impacts container image sizes.

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Windows Server 2025 offers multiple options for running Docker containers, supporting both Linux and Windows. Users can choose between two isolation modes for Windows containers, while Linux containers can optionally run on WSL 2. Additionally, Server 2025 improves backward compatibility.

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