Why Multiple IP Addresses Are Required When I Create or Enable a Dedicated Load BalancerLoad Balancer?

These IP addresses are used by underlying resources.

Generally, 2 IP addresses are required for creating a dedicated load balancer in a single AZ, and 6 IP addresses are required for creating a dedicated load balancer with cross-VPC backend enabled. If you create a dedicated load balancer in multiple AZs, more IP addresses will be required. There is an algorithm to determine how many IP addresses are required.