Multivalue traffic-routing method
The Multivalue traffic-routing method allows you to get multiple healthy endpoints in a single DNS query response. This configuration enables the caller to do client-side retries with other endpoints in case a returned endpoint being unresponsive. This pattern can increase the availability of a service and reduce the latency associated with a new DNS query to obtain a healthy endpoint.
MultiValue routing method works only if all the endpoints of type 'External' and are specified as IPv4 or IPv6 addresses. When a query is received for this profile, all healthy endpoints are returned and are subject to a configurable maximum return count.
https://docs.microsoft.com/en-us/azure/traffic-manager/traffic-manager-routing- methods#multivalue

Managing Authorization
The circuit owner can share a circuit with up to 10 Azure subscriptions. The circuit owner can view who has been authorized to the circuit. The owner can revoke the authorization at any time.
https://azure.microsoft.com/en-us/blog/enable-multiple-subscription-
expressroute/#:~:text=The%20circuit%20owner%20can%20share,the%20authorization%20at%2
0any%20time.

Adding an alias is used when referencing services using specific names (e.g., DNS names), but in this case, you need to add the actual resource (storage1) to the policy, not just an alias.

Traffic analytics examines raw NSG flow logs. It then reduces the log volume by aggregating flows that have a common source IP address, destination IP address, destination port, and protocol.
Reduced logs are enhanced with geography, security, and topology information and then stored in a Log Analytics workspace.\
https://learn.microsoft.com/en-us/azure/network-watcher/traffic-analytics