[aeturnum]

While I could certainly put most of this together from my undergrad CS education, I would not say this "subject [was] taught" to me during undergrad. Instead, as with much of undergrad, you get pieces of it along the way - but collecting it together and writing for a somewhat-lay audience has a lot of value. This is also more up to date than my under grad education from ~14 years ago! It has clear explanations for things like Hyperthreading, which existed at the time I was in undergrad, but hadn't really made its way into the curriculum yet.