Windows 10 ARM64, also known as Windows 10 on ARM, is a version of the Windows 10 operating system designed to run on devices with ARM-based processors. Unlike traditional Windows 10, which primarily runs on x86 and x64 processors, Windows 10 ARM64 is optimized for ARM architecture. Here are key points about Windows 10 ARM64:

1. ARM Architecture: Windows 10 ARM64 is tailored to work on devices powered by ARM-based processors, which are commonly found in smartphones, tablets, and some laptops. ARM processors are known for their energy efficiency and are used in devices where long battery life is essential.

2. Compatibility: While Windows 10 ARM64 is designed for ARM processors, it aims to maintain compatibility with existing Windows software through emulation technology. This allows it to run many traditional Windows applications, including productivity software and games.

3. Always Connected: Windows 10 ARM64 devices are often marketed as "Always Connected PCs" because they can maintain internet connectivity through cellular networks, similar to smartphones. This feature enables users to stay connected even when Wi-Fi is unavailable.

4. Battery Efficiency: ARM-based devices running Windows 10 ARM64 tend to offer longer battery life compared to their x86 counterparts, making them suitable for on-the-go use.

5. Form Factors: Windows 10 ARM64 is found in various form factors, including 2-in-1 devices, tablets, and lightweight laptops. These devices are known for their portability and versatility.

6. Limitations: While Windows 10 ARM64 is compatible with many Windows apps, some software that relies on x86-specific instructions may not perform optimally. Additionally, high-performance applications like video editing software may not be as well-suited for ARM-based devices.

7. Microsoft Store: Users can download apps from the Microsoft Store, which offers a growing selection of apps optimized for ARM64 architecture.

8. Windows Updates: Windows 10 ARM64 receives regular updates from Microsoft, ensuring security and performance improvements, as well as compatibility enhancements.

9. Windows 11 on ARM: Microsoft has also introduced Windows 11 for ARM-based devices, building on the foundation of Windows 10 ARM64 with further optimizations and a refreshed user interface.