Data backup is the process of creating copies of digital information to protect it from loss or damage. This can include files, documents, photos, and software. Backups can be stored on various media, such as external hard drives, cloud storage services like Google Drive or Dropbox, and even physical devices like USB flash drives. Regular data backups are essential for individuals and businesses to ensure that important information is not permanently lost due to hardware failures, accidental deletions, or cyberattacks. By maintaining up-to-date backups, users can quickly restore their data and minimize disruptions to their work or personal life.