ARMv8-M is a processor architecture designed by ARM Holdings for microcontrollers and embedded systems. It offers a balance of performance and energy efficiency, making it suitable for a wide range of applications, from IoT devices to automotive systems. The architecture supports both Thumb-2 and AArch32 instruction sets, allowing for flexible programming options. One of the key features of ARMv8-M is its support for TrustZone, which provides a secure environment for sensitive operations. This enhances security by isolating critical code and data from less secure applications. Overall, ARMv8-M aims to enable developers to create efficient and secure embedded solutions.