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Amazon Application Load Balancer (ALB) distributes incoming application traffic to increase availability and support content-based routing.
AWS ELB is a network load balancer service provided by Amazon Web Services for distributing traffic across multiple targets, such as Amazon EC2 instances, containers, IP addresses, and Lambda functions.
Application Request Routing (ARR) is an extension to Internet Information Server (IIS), which enables an IIS server to function as a load balancer.
Azure Front Door is a scalable and secure entry point for fast delivery of your global web applications.