When Do I Need Public Bandwidth for ELB?
To access a load balancer over the Internet, you need to buy an EIP, set a bandwidth for the EIP, and bind the EIP to the load balancer. If you access the load balancer within a VPC, no EIP and bandwidth are required.
If you access backend servers through their EIPs, the EIP and bandwidth of the load balancer are not used.
Parent topic: Billing
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