Whenever thousands or even millions of users open an application at the same time, one big question arises: "How does a single website handle so much traffic without crashing?" The answer is usually a Load Balancer . A load balancer sits between users and backend servers and distributes incoming traffic intelligently. Instead of this: Users --> One Server Modern systems work like this: Users --> Load Balancers --> Multiple Servers This prevents any single server from becoming overloaded. What Ac