Infrastructure and cloud is all about where software runs – the actual hardware, networking, and systems that allows you to magically type a URL into your browser, somehow loading a feature packed app full of data, all over the internet.
In the “old” days (i.e. high school), most apps ran locally – you’d get a copy of Excel via a CD, or download it from the web. All of the computing that Excel did – both the “graphical” frontend you interacted with, and all of the math that happened behind the scenes – took place on your laptop [1] Or your Dell Tower Desktop, brother.. Data was stored as files on your computer. Even if Excel did sometimes communicate with the web, it was only to pull in a data source and get updated. You usually paid a one time fee to buy the software, or licensed it yearly.
