Why do we need Load Balancing & Managed Compute?

A single server has hard limits: when CPU or memory runs out, your website crashes. If that single server reboots or fails, your entire business goes offline.

Elastic Load Balancing (ELB) and scalable EC2 instances solve this by distributing user traffic across multiple healthy servers in different Availability Zones, so if one server dies, your users never even notice.

1. Scaling Up vs. Scaling Out

Think of running a busy kitchen:

Scale Up (Vertical): Buying a bigger stove. You replace your small server with a massive 64-CPU machine. It's easy, but it has a physical ceiling and still represents a single point of failure.

Scale Out (Horizontal): Hiring more cooks with more stoves. You run five 2-CPU servers behind a load balancer. When one breaks, the other four keep cooking.…