Flattening business data to Excel Online (OneDrive and OneDrive for Business)

https://www.office.com/

OneDrive is the Microsoft cloud service that connects you to all your files. It lets you store and protect your files, share them with others, and get to them from anywhere on all your devices.

https://support.office.com/en-us/article/what-is-onedrive-for-business-187f90af-056f-47c0-9656-cc0ddca7fdc2

https://support.office.com/en-us/article/using-office-online-in-onedrive-dc62cfd4-120f-4dc8-b3a6-7aec6c26b55d