File Storage - OneDrive vs. Teams vs. SharePoint

At a simple level, OneDrive is for ‘one user,’ Teams is for ‘a small group of users’ and SharePoint is for ‘sharing and collaboration with everyone.’
Use Teams when:
Working with your team. Teams - Recommended Setup
What is a team?
This could mean a department (like HR) or a project team (like those working together on a building construction project) or those working together on an area of shared responsibility (like annual budgeting and financial planning).
Use OneDrive when:
Working on draft files or keeping yourself organized.
Use SharePoint when:
You’re working across your organization (or multiple organizations).
Why use Microsoft 365 instead of my computer or the H and S Drives?
Access to all your files any time, anywhere with no VPN necessary.
Real-time collaboration and versioning of files.
Searchable beyond just file names, including inside documents.
Encryption, Data Protection, and Multi-Factor access for layers of security.
Seamless transitions when changing departments or organizations.