The Arm Cortex-M35+ MCU is a microcontroller unit developed by Arm Holdings, a British semiconductor and software design company. It is part of the Cortex-M series, designed for embedded applications in industries such as automotive, industrial automation, consumer electronics, and IoT. The Cortex-M35+ features enhanced security with Arm TrustZone technology, making it suitable for secure, low-power, and high-performance applications. Arm Holdings provides the IP, which is licensed to various manufacturers worldwide to produce customized MCUs.