Imagine that you meet with a small startup company that is in the early stages of its operations.

Currently, their architecture uses a LAMP stack $($with MySQL$),$ Apache and PHP$,$ all running

on one desktop PC within their small office.

Like many small startups, they are confident they will be the next big thing and expect

significant, rapid, yet un$-$quantified growth in the next few months. With this in mind, they

would like you to architect their system and develop it in AWS. The startup is concerned with

the following requirements:

$($a$)$ They would like the developed application to scale up on demand. With uncertainty

around when and how much the demand would be$,$ they are concerned about buying

too much infrastructure too soon or not enough infrastructure.

$($b$)$ They want to cater to disaster recovery to ensure high performance and throughput of

their application.