Day 5/30: Auto Scaling is like calling extra cashiers

When the queue grows, more cashiers open.

When customers leave, the extra counters close.

AWS Auto Scaling can add computing capacity when demand increases and reduce it when demand falls.

But it is not emergency magic.

Your application must be designed to scale, your health checks must work, and your scaling rules must make sense.

Otherwise, AWS will automatically create more copies of the same problem.

Automation is powerful. Good architecture must come first.