Workshared and non-workshared Revit models can be saved to the cloud.
A Revit Cloud Worksharing entitlement is required for collaborating with others on a workshared model on Autodesk Docs. The Revit Cloud Worksharing entitlement is included with Autodesk BIM Collaborate Pro.
A Cloud Models for Revit entitlement is required to save a non-workshared cloud model and share it with others on Autodesk Docs. The Cloud Models for Revit entitlement is included with Revit or the AEC Collection.