Who said anything about microservices on the local network stack? You don't need to do that to separate the layers; just have them be separate logical layers in

Who said anything about microservices on the local network stack? You don't need to do that to separate the layers; just have them be separate logical layers in your application. This is common enough that I almost think we're talking about different things: people have written APIs and SSR apps for much, much longer than SPAs have been around.