The Arm Cortex-M33 is a 32-bit microcontroller core designed by Arm Holdings, a British semiconductor and software design company. It is part of the Cortex-M series, which targets embedded systems and IoT applications. The Cortex-M33 features enhanced security, digital signal processing (DSP), and floating-point capabilities, making it suitable for industrial automation, consumer electronics, and automotive systems. Arm licenses this IP to semiconductor manufacturers like NXP, STMicroelectronics, and Microchip, who integrate it into their MCU products for diverse markets.