I don't do much of excel directly as before we number crunching, need to process input before making and use to it. CSV format is good and then excel.

But for me k8s solves lot of problems, make deployment reliable, faster, infrastructure in code and these things. Other than k8s, haven't seen faster way of deployment on scale. IMO canary deployment style in istio is just the way deployment should be done. I find k8s great piece of software, still lots of apis need to be in GA, but still I found and see k8s a great piece of future.