AWS Application Load Balancer (ALB) | Part 1 - Theory| | Beginner to Advanced Guide
In this video, we begin our *AWS Application Load Balancer (ALB)* series by covering the complete *theory* behind one of the most important AWS networking services.
If you're preparing for **AWS Solutions Architect**, **AWS Developer Associate**, DevOps interviews, or building production-grade applications on AWS, understanding ALB is essential.
📚 In this video, you'll learn:
What is an Application Load Balancer (ALB)?
Why do we need a Load Balancer?
Layer 7 vs Layer 4 Load Balancing
ALB Architecture
Listeners and Listener Rules
Target Groups
Different Target Types
Health Checks
Cross-Zone Load Balancing
SSL/TLS Termination
Host-Based Routing
Path-Based Routing
HTTP Header Routing
Query String Routing
Redirects & Fixed Responses
Sticky Sessions
High Availability & Fault Tolerance
Real-world Production Use Cases
When to use ALB vs NLB vs Classic Load Balancer
This theoretical foundation will help you understand every concept before moving to the practical implementation.
🚀 *Upcoming Videos in this Series*
Part 2 – Hands-on ALB Setup
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