The Geo-Replication feature for Azure Event Hubs in the premium and dedicated tier is now generally available. The Event Hubs Geo-Replication feature is one of the options to insulate
Azure Event Hubs client applications against outages and disasters, providing replication of both metadata (entities, configuration, properties) and data (message data and message property / state changes).
The Geo-Replication feature ensures that the metadata and data of a namespace are continuously replicated from a primary region to one or more secondary regions. Moreover, it allows promoting any secondary region to primary, at any time.
Promoting a secondary repoints the endpoint for the namespace to the selected secondary region and switches the roles between the primary and secondary region. The promotion is nearly instantaneous once initiated and doesn’t require any changes on the client side.