You have three cloud-based file storage options...
1. OneDrive for Business
A free 5TB cloud-based file store, integrated with the Office 365 apps:
Get started with OneDrive for Business >
2. Google Drive
A free 20GB file store that is part of the Google Workspace for Education apps:
Get started with Google Drive >
3. Dropbox Business (subscription required)
Unlimited storage at a discounted rate when purchased through the University and linked to your @cam email address (you can get a rebate if you already have a personal subscription):