An exabyte is a unit of digital information storage that equals one quintillion bytes, or 1,000 petabytes. To put it in perspective, one exabyte can hold about 250 billion songs or 500 billion pages of standard text. It is often used to measure large data sets in fields like big data, cloud computing, and data centers. As technology advances, the amount of data generated continues to grow rapidly, making exabytes a relevant measure for understanding data storage needs. For instance, major companies like Google and Facebook manage exabytes of data daily, reflecting the scale of information in our digital world.