An SSD (Solid State Drive) is a type of data storage device that uses flash memory to store data, offering significantly faster read and write speeds compared to traditional HDDs (Hard Disk Drives). Unlike HDDs, SSDs have no moving parts, making them more durable, energy-efficient, and less prone to mechanical failure. SSDs improve overall system performance, reducing boot times, speeding up application loading, and enhancing file transfer speeds. They are available in various form factors, including 2.5-inch, M.2, and PCIe, making them versatile for different types of devices and use cases. SSDs are commonly used in laptops, desktops, and servers, providing a reliable and high-speed storage solution for modern computing needs.