A petabyte is a unit of digital information storage equal to 1,024 terabytes or approximately one million gigabytes. It is often used to measure large data sets, such as those generated by social media platforms, scientific research, or cloud storage services. To put it in perspective, a petabyte can store about 500 billion pages of standard text or around 13.3 years of high-definition video. As data generation continues to grow, understanding petabytes becomes essential for managing and analyzing vast amounts of information in today's digital world.