Time Machine, macOS's built-in backup utility, offers Mac users a free alternative to paying for expanded cloud storage such as Apple's iCloud+, which charges for tiers above the free 5GB allowance. As device backups and media files quickly eat into that limited free storage, the article argues that local backups via Time Machine are a practical, cost-free way to protect files without needing internet access to them.

Setting up Time Machine involves connecting an external hard drive or SSD, formatted with the APFS file system, ideally with at least twice the capacity of the Mac's internal drive; older, slower drives are said to work fine and can even be preferable for long-term storage. Once configured through System Settings, backups run automatically—by default hourly, though this can be changed to daily or weekly—and the tool retains multiple versions of files over time, allowing users to restore earlier copies via Finder's Time Machine interface.