There were a few interesting topics discussed on today's "Daily Tech Headlines" podcast, and free Microsoft Office for Windows with ads was one of them. On Windows, I've actually switched over to LibreOffice for my personal use, and most companies usually offer employees a Microsoft 365 subscription that includes Office, but for those without these options, free access to MS Office with ads might soon be another alternative. I suppose you could call it ad-supported MS Office for Windows.
https://www.theverge.com/news/618278/microsoft-office-free-windows-apps-ad-supported-version