Imagine 1,000 users arriving at your application at the same time.
Without coordination, one server gets overwhelmed while another sits comfortably doing almost nothing.
An AWS load balancer distributes incoming traffic across healthy targets.
It also checks whether those targets are working.
If one server fails, traffic can be directed elsewhere.
The lesson: do not make one server carry the whole company on its back. Even your best employee eventually needs help.
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