A solid-state drive (SSD) is a type of storage device that uses flash memory to store data. Unlike traditional hard disk drives (HDDs), which rely on spinning disks and moving parts, SSDs have no mechanical components. This makes them faster, more durable, and less prone to failure, as they can access data almost instantly. SSDs are commonly used in computers, laptops, and gaming consoles to improve performance. They offer quicker boot times, faster file transfers, and enhanced overall system responsiveness. As technology advances, SSDs are becoming more affordable and are increasingly replacing HDDs in many applications.