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Elastic Load Balancing (ELB) automatically distributes incoming traffic across multiple EC2 instances, containers, or IP addresses. Load balancers are essential for high availability, fault tolerance, and horizontal scaling. This lesson covers the three main types: Application Load Balancer (ALB), Network Load Balancer (NLB), and Classic Load Balancer (CLB).
Without a load balancer, clients connect directly to individual instances. This creates several problems:
A load balancer solves all of these:
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