When you start working with your Phoenix application, you'll inevitably start marveling about how fast your application runs, how stable it is, and how well it handles an absolute ton of incoming connections. The great thing about working with Phoenix is that all of this is just something you get for free! No drama, no confusion, your application just scales for free to an amazing level. This is a wonderful thing to think about when you're architecting a site. Typically, there is a dance that happens somewhere along the implementation of your site where you need to start thinking and planning for how you're going to scale your app for 10x/100x/1000x growth in concurrent users.
If you're hosting your application in the cloud, you might just scale by throwing a ton of money at the problem until you can start making...