A multicore processor is a single computing component that contains two or more independent processing units, known as cores. Each core can execute its own tasks simultaneously, allowing for better performance and efficiency compared to single-core processors. This design helps in handling multiple applications or processes at the same time, making it ideal for modern computing needs. Multicore processors are commonly used in various devices, including personal computers, smartphones, and servers. They enable faster data processing and improved multitasking capabilities, which are essential for running complex software applications and performing resource-intensive tasks like gaming and video editing.