Google’s new Backup and Sync (15GB free; larger storage options available for a fee) software tries to leverage Google’s existing Google Drive and Google Photos products by adding a file-backup option. It has a lot of limitations, but two key advantages. First, it’s simple. Second, it works with Google’s free storage tier and all its paid tiers for Google Drive, which is reasonably affordable.
Simplicity in file backups helps ensure that people actually back up their files. Nearly every day, I hear a tale of heartbreak about someone who erased photos or a drive or had a hardware failure and had made no other copy. (The best time to back up is starting right now!) I typically steer people to an online hosted backup service with a flat rate for unlimited storage, like Backblaze. Or, if they want more control over encryption and where files are placed, Arq or ChronoSync.