The ARM Cortex is a family of computer processor designs developed by ARM Holdings. These processors are widely used in various devices, including smartphones, tablets, and embedded systems, due to their energy efficiency and performance. The Cortex family includes different series, such as Cortex-A for applications, Cortex-R for real-time applications, and Cortex-M for microcontrollers. ARM Cortex processors are based on the RISC (Reduced Instruction Set Computing) architecture, which simplifies the instruction set to improve performance and reduce power consumption. This design allows developers to create efficient software that can run on a variety of devices, making the Cortex family a popular choice in the tech industry.