The letters SSD stand for Solid State Drive. SSDs are a type of data storage device that uses flash memory to provide faster read and write speeds compared to traditional hard disk drives (HDDs). With no moving parts, SSDs are more resilient to physical shock and have lower latency, enhancing system performance significantly. They are increasingly used in laptops, desktop computers, and servers for their speed, efficiency, and energy savings. SSDs also improve boot times and application loading, making them a popular choice for users seeking enhanced computing experiences.