Solid-state drives (SSDs) differ from traditional hard drives (HDDs) mainly in their technology and performance. SSDs use flash memory to store data, resulting in faster read and write speeds, lower access times, and greater durability due to the absence of moving parts. In contrast, HDDs employ spinning magnetic disks for data storage, which makes them slower and more prone to mechanical failures. While SSDs are typically more expensive, their performance benefits have made them increasingly popular for both consumer and enterprise storage solutions.