Question

what is represented by \?\ in the following figure?
customers network
partner edge
primary connection
microsoft edge
secondary connection
microsoft peering for office 365, dynamics 365, azure public services (public ips)
azure private peering for virtual

Explanation:

The figure shows a network connection setup between a customer's network, partner edge, and Microsoft edge with primary and secondary connections. The "?" is likely related to the concept of redundancy or failover (since there are primary and secondary connections) or perhaps the type of connection (like ExpressRoute, which uses primary and secondary connections for high availability). In the context of computer science (a subfield of Natural Science), this setup is about network connectivity for Microsoft services, and the "?" probably represents ExpressRoute Circuits (as ExpressRoute uses primary and secondary connections between partner edge and Microsoft edge for reliable connectivity to Microsoft cloud services like Office 365, Azure, etc.).

Answer:

ExpressRoute Circuits (or a similar term related to the primary and secondary network connections for Microsoft cloud services connectivity)