We are building a plugin for confluence to get space level permissions for Data center edition and need to know how version upgrades are happening in confluence on-prem Data Center edition. Is there a minimum data center version of software which for supporting the plugin?
Is the data center version automatically upgraded by Atlassian or customer has to upgrade themselves?
Data Center apps are not automatically upgraded. Confluence administrators will have to do so manually. They will be passively “notified” by the Universal Plugin Manager, as it will say that an update is available.
There is no minimum version of the host app that you need to support. When publishing an app you only agree to maintaining it by keeping it compatible with the latest version of the app (within reasonable time).
It is recommended to follow the Atlassian End of Life policy.