Given the millions of things stored on the internet, you may wonder how and why it's collected. That's where big data comes in. Big data is like a giant filing cabinet for different types of data accessible on the internet, filled with everything from financial records and photographs to shopping histories. Data can come from a multitude of different sources, meaning the filing process is not always structured. Readers learn about the various ways big data is stored and used depending on the company, as well as why many companies collect big data in the first place. Photographs and illustrations guide their reading journey while the concept is broken down into accessible, age-appropriate language.