You run the EXE. It immediately elevates privileges (once), verifies digital signatures, downloads the exact Office 2016 bits from Microsoft's CDN (not a sketchy third-party server), and installs them silently in the background.
You run the EXE. It immediately elevates privileges (once), verifies digital signatures, downloads the exact Office 2016 bits from Microsoft's CDN (not a sketchy third-party server), and installs them silently in the background.