The Arm Cortex-M33 is a 32-bit RISC processor core designed by Arm Holdings, a UK-based semiconductor and software design company. It serves industries like IoT, industrial automation, and consumer electronics, offering enhanced security, power efficiency, and performance. Key products using this core include microcontrollers (MCUs) from manufacturers like NXP, STMicroelectronics, and Renesas, targeting embedded systems and smart devices.