advanced~2.5h

Load Balancer Types Deep Dive: ALB, NLB & Gateway LB

The operational depth behind AWS's three load balancer types — path/host-based routing on ALB, extreme throughput and static IPs on NLB, and transparent traffic inspection with Gateway Load Balancer — and how to choose correctly between them.

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🎓 Learning objectives

  • Choose correctly between ALB, NLB, and Gateway Load Balancer for a given traffic pattern and protocol
  • Explain how ALB's path-based and host-based routing let one load balancer serve multiple backend services
  • Explain what Gateway Load Balancer inserts into the traffic path and why that's architecturally different from ALB/NLB
  • Explain cross-zone load balancing and its cost implication for NLB specifically

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📂 Subtopics

Related concepts

auto-scaling-load-balancingvpc-networkingec2-fundamentalshybrid-connectivity

Next Step

Continue to Auto Scaling Policies Deep Dive: Dynamic, Scheduled & Predictive