I did not necessarily need an explanation of what 'the cloud' is or isn't. I came to believe it's definition is vague on purpose. I found out it's (almost) the same old internet with new shiny marketing labels on it (I say 'almost' because clubs like Netflix probably need their movies stored near the end user for seamless HD streaming). With the end goal of getting everyone's data on someone else's server (so they can control it, eventually without your permission). It works because programmers who might understand technically what it is, usually don't call the shots when some Big Tech salesperson offers shiny new apps from the US.
Luckily, I don't need a cloud. Not someone else's cloud, not even building my own cloud. Why? Because the technical progress required for me to save, work, share and publish stuff online (or locally on my computer) was already there from the '90s. And luckily, it's not standing still. Although every exec and marketing boy wants you to believe the only good stuff is the next hyped up stuff.
We see the same thing happening with LLMs and AI. It's marketing fluff all around, by people who so fully believe in it that it becomes scary. And it's hard to argue against it, because it is impressive what LLMs can do. It's also bullshite and has nothing to do with reasoning, or thinking, or whatever human capabilities are projected onto a digital parrot (I don't want to ruffle some feathers, pun intended, a lot of people probably have good use for LLMs and it's still interesting that people work on these systems).
A computer, an internet connection and some webhosting get's you more than far enough for most use cases. Without vendor lock-in.
There's more to technology than only technology.