A solid-state hard drive (SSD) is a type of data storage device that uses flash memory to store and retrieve data. Unlike traditional hard drives that use spinning disks, SSDs have no moving parts, making them more durable and less prone to mechanical failures. They are also smaller, lighter, and consume less power, making them ideal for use in laptops and other portable devices. SSDs are known for their faster boot times and quicker data access speeds compared to traditional hard drives. They are commonly used in high-performance computers for tasks such as gaming, video editing, and data analysis, but their cost is higher than traditional hard drives.