Love this. What I like about system design is being aware of things like the 12-factor app but at the same time being aware of how much you can scale vertically

Love this. What I like about system design is being aware of things like the 12-factor app but at the same time being aware of how much you can scale vertically before you need to scale horizontally, and avoiding any form of bikeshedding, premature scaling, and premature optimization.