Windows Runtime
Windows Runtime (WinRT) is a platform-agnostic application architecture and API set introduced by Microsoft for building modern Windows applications. It provides a component-based framework that supports multiple programming languages (C++, C#, JavaScript) and enables the creation of Universal Windows Platform (UWP) apps. WinRT offers a secure, sandboxed environment with access to system features like sensors, notifications, and live tiles.
Developers should learn WinRT when building cross-device Windows applications for PCs, tablets, Xbox, HoloLens, or IoT devices, as it ensures compatibility and a consistent user experience across the Windows ecosystem. It is particularly useful for creating touch-friendly, responsive UWP apps that leverage modern Windows features, such as Cortana integration or inking, and for scenarios requiring app distribution through the Microsoft Store.