Work on the expected costs of running your application. Imagine you had a startup and, of
course, you start small. You need to be prepared for when your products becomes popular.
o You have now a robust application that is fault tolerant. However, it is only a server
and a DB and can serve only a few users (how many?). Let’s imagine 100.
o How much does it cost to scale up your infrastructure in order to server 100 000
users? And 10 million?
o In AWS nearly everything is billable and has a cost. Find the costs and do your cost