The Arm Cortex-M355+ MCU is a microcontroller unit developed by Arm Holdings, a British semiconductor and software design company. It is part of the Cortex-M series, which serves industries such as industrial automation, IoT, automotive, and consumer electronics. The Cortex-M355+ is designed for secure, high-performance embedded applications, featuring enhanced machine learning capabilities and robust security features like Arm TrustZone technology. Arm's products are widely used by manufacturers worldwide to create energy-efficient and scalable solutions for connected devices.