Elastic Load Balancing

12 min · Module 4

ALB (L7 HTTP/HTTPS, path/host routing), NLB (L4 ultra-low latency/TCP), GWLB for appliances. Internet-facing vs internal. Cross-zone load balancing spreads evenly.

Example / notes

# ALB: HTTPS listener → target group(s) → ASG
# ACM cert on HTTPS listener
# Sticky sessions only when the app requires them

Practice in Lab: /lab/scenarios/three-tier/

← EC2 and Auto Scaling

Modules in this track

4. Compute & load balancing
- EC2 and Auto Scaling
- Elastic Load Balancing
5. Storage, database & DNS
- S3 storage classes and access
- RDS Multi-AZ and Route 53