The Architecture Foundation for Distributed Systems: Why Load Balancing Matters

As applications experience growth, vertical scaling—adding resources to a single server—quickly becomes impractical. Load balancing enables horizontal scaling by distributing traffic across multiple nodes, making it essential for modern distributed architectures, especially in microservices environments. By understanding Layer 4 and Layer 7 balancing strategies, engineers can ensure their systems remain responsive, resilient, and cost-effective at scale.