Comment by Beltalowda

A lot of people seem to underestimate how fast computers are; a lot of times you don't need to scale horizontally, even at "webscale". And even when you do, it's not like you need microservices for that; sometimes you just run a new instance of $app, or spin off one thing to a new service (while similar to "microservices", it's not really the same thing as the bulk remains monolithic).