I mean, coralmetrics+pmet has been doing that infrastructure wide tracing for decades (albeit being slowly replaced in spots now). Back in 2014 they were still

I mean, coralmetrics+pmet has been doing that infrastructure wide tracing for decades (albeit being slowly replaced in spots now). Back in 2014 they were still sharing a few years old (at that time) detail-level service call graph that had so many nodes and lines it looked like string art.