The ARM Cortex-A series is a family of processors designed for high-performance applications, commonly found in smartphones, tablets, and other embedded systems. These processors are known for their energy efficiency, allowing devices to run longer on battery power while delivering robust computing capabilities. Cortex-A processors support advanced features like multicore processing and hardware virtualization, making them suitable for complex tasks and multitasking environments. They are part of the broader ARM architecture, which is widely used in mobile and embedded devices due to its balance of performance and power consumption.