A. Write an AWS Lambda script to get the IP addresses of the ALBs in different Regions. Update the on-premises firewall’s rule to allow the IP addresses of the ALBs.
B. Migrate all ALBs in different Regions to the Network Load Balancer (NLBs). Update the on-premises firewall’s rule to allow the Elastic IP addresses of all the NLBs.
C. Launch AWS Global Accelerator. Register the ALBs in different Regions to the accelerator. Update the on-premises firewall’s rule to allow static IP addresses associated with the accelerator. Most Voted
D. Launch a Network Load Balancer (NLB) in one Region. Register the private IP addresses of the ALBs in different Regions with the NLB. Update the on- premises firewall’s rule to allow the Elastic IP address attached to the NLB.
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