“Simpler, speedier and more reliable”—I can get behind that:
This new tool replaces the existing Google Photos desktop uploader and Drive for Mac/PC.
Backup and Sync is an app for Mac and PC that backs up files and photos safely in Google Drive and Google Photos, so they’re no longer trapped on your computer and other devices. Just choose the folders you want to back up, and we’ll take care of the rest.
Check out the help center if you need details—but generally it should be set it, forget it, get (optionally) free unlimited photo storage.