A family of Microsoft word processing software products for creating web, email, and print documents.
By default, subscription versions synchronize your documents with OneDrive, which also includes automatic saving.
You can disable OneDrive synchronizing, if you want. See the "Unlink OneDrive from your computer" section in the article at https://support.microsoft.com/en-us/office/turn-off-disable-or-uninstall-onedrive-f32a17ce-3336-40fe-9c38-6efb09f944b0.