Are Exchange Server Subscription Edition (SE) calendar connections supported?
Read as MarkdownExchange Server Subscription Edition (SE) calendar connections are supported.
The only known limitation is that Attachments added to Partner Events (events that your application creates) are not rendered on the external calendar side.
Please see our guides on connecting on-prem Exchange calendars via Individual Connect and Enterprise Connect for more information on how to connect, or contact support@cronofy.com for further assistance.