I can more than imagine it, I design for it. Concurrent all the things. The vast majority of GET workloads are either embarrassingly parallel or so badly designed that they fall over with even the gentlest touch (which I’m sad to say I’ve encountered; services falling over from
sequential requests!).
Edit to add: this isn’t some wild idea, recent network and web standards have made increasing concurrency both automatic (HTTP/2 and beyond) and tunable (various prefetch APIs).