Microsoft and confidentiality of your data are two incompatible concepts. Microsoft is basically the editor of a set of tools designed to make employees more p

Microsoft and confidentiality of your data are two incompatible concepts. Microsoft is basically the editor of a set of tools designed to make employees more productive. As long as you use Microsoft products with this in mind, there's no ambiguity: you give Microsoft the data you work on, and it gives you productivity in return. Unless you are the actual CEO of a company involved in trade secrets (or a defense organization), you shouldn't care about Microsoft snitching the content of your slides, and everything else you write or see, to its own servers on the justification that it will make your experience better. It's not worth entering the debate, and if you accuse Microsoft you will probably need to accuse its competitors. Just remember to keep out of anything Microsoft when you process anything strictly personal, and you will be more than fine. P.s.: I almost forgot to answer your question. Yes, you approved this. And again, if it's not your company, your boss very likely approved it and wouldn't even consider the effort of looking into this, so it's not your business. Literally.