What is Time Machine backup on Mac?

Time Machine is Mac's built-in automatic backup system. It saves copies of your files every hour to an external hard drive. If you accidentally delete a file, your Mac breaks, or a hard drive fails, you can restore your files from any point in time.

Time Machine automatically saves copies of your Mac's files to an external hard drive every hour. If you accidentally delete a file, spill coffee on your Mac, or a hard drive fails, you can restore your files from any day. It's like having a time portal to any moment in your Mac's history.