What are the differences between the cloud vs server?
The benefit of a cloud environment is that your cloud app will always have the most up-to-date features available for Confluence itself and any installed apps.
However, Atlassian Confluence Cloud also has several functional differences, and when moving to Confluence Cloud there are some differences in the Comala Document Management for Cloud app.
The Product Comparison page lists all the major feature differences between our cloud and server apps.
Further information