So, who is the product?
https://docs.microsoft.com/en-us/deployoffice/microsoft-search-bing
Important bit for when they back off or delete this page: Starting with Version 2002 of Office 365 ProPlus, an extension for Microsoft Search in Bing will be installed that makes Bing the default search engine for the Google Chrome web browser.
Also:
https://winaero.com/blog/wordpad-is-gettings-ads-in-windows-10/
Wordpad with advertisements? Really?
An upcoming feature of WordPad has been discovered by enthusiasts, revealing in-app ads that promote Microsoft Office. The change is hidden in recent Insider Preview builds, and not activated for most users.