Q101. What is Elastic Load Balancing (ELB)?

✅ Answer (Detailed)

Elastic Load Balancing distributes incoming traffic across multiple targets such as:

• EC2 instances
• Containers
• IP addresses
• Lambda functions

It improves:

• High Availability
• Fault Tolerance
• Scalability

✅ Production Scenario

An e-commerce platform runs 20 EC2 servers behind ALB. If one server fails, ELB routes traffic only to healthy servers automatically.