Question

Your company runs a fleet of Azure VMs behind a Standard Load Balancer that make outbound calls to a partner's API. The partner requires that all outbound traffic originate from a contiguous, predictable range of public IP addresses so they can whitelist it in their firewall. You need the smallest amount of ongoing management overhead while guaranteeing the addresses stay contiguous and reserved. What should you deploy?

Accepted Answer

A Public IP Prefix and allocate the individual Standard public IPs from that prefix for the load balancer's outbound rule

Answer

Multiple individually created Standard public IP addresses and manually assign them to the load balancer front end

Answer

A NAT Gateway using a single dynamically allocated Basic public IP address

Answer

A custom IP prefix (BYOIP) advertised from your on-premises address space