2 of the best Node.js web frameworks, each one with its own philosophy, load of clear benefits and set of drawbacks. So, how would the results of a Koa vs Express comparison look like? How are they different when it comes to the middleware implementation approach? What are the obvious benefits of using Koa over Express? And what project requirements would make Express a better candidate? Let's dig into the 2 piles of framework-specific features, advantages, limitations, and use cases and dig out the arguments to base your final choice on: