What are the key differences between AWS Application Load Balancer, Network Load Balancer, and Gateway Load Balancer? When would you use each in a cloud architecture?

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AWS offers three types of Elastic Load Balancers—Application Load Balancer (ALB), Network Load Balancer (NLB), and Gateway Load Balancer (GWLB)—each designed for different use cases and operating at different layers of the OSI model.