Rolling out and adopting Micrsoft OneDrive for Business (ODFB) is a great opportunity to get rid of your legacy onprem file servers, shares, local device saved data and roaming profiles etc.

ODFB enables you to access your files from a versatile set of endpoints (PC/Mac/common Browsers/iOS/Android) and keep your data safe and in sync. You can also share certain files with others as needed. However, ODFB is one part for storing data. It is primarily for your documents. Working requires also other options for data collaboration, distribution and sharing therefore you might want to consider SharePoint Online as backend for storing files within your company, department or team.

To start and abandon your legacy file repository you can find supportiv guidiance and details for ODFB, e.g.  

• Usage Scenarios for OneDrive
• Guidance on how OneDrive can be utiliized
• Use Cases
• Success measuring  options
• Planning communication
• …

https://resources.techcommunity.microsoft.com/resources/onedrive-adoption/