What the Hell is Activity Anyway?
I use .NET and I keep seeing something called `Activity` but in OpenTelemetry there is only talk about “Span” and “Trace,” why? And what should I be using? This is understandable, and has caused confusion since that decision was made by Microsoft back in 2018/19 (I believe). I’ll do my best to provide some guidance on what the distinction is, and also when each is useful.