Satya saved Microsoft by doubling down on Azure and Cloud. Something that Balmer failed to do with Mobile.
One could say he actually destroyed MSFT to build something new.
And 1TB of storage per user.
From an iPhone or iPad, you connect a USB drive to it using the USB C port, the USB drive shows up in the Files along with your OneDrive storage location and you move files to your drive.
The same way you would with GDrive, iCloud Drive or Dropbox