A thread...
Let's go through them.
This is the baseline service that virtually everyone uses. The engineering is deep, but you won't need it.
It serves as a MAJORITY of the entire AWS global spend, in my estimation.
It can store more data than you will ever be able to afford. There are no capacity limits here, and pricing is linear.
Inside of each region there are multiple "Availability Zones." These are datacenters a few miles apart or so. Great for local disaster planning.
This is harder than it sounds.
That's because helping people find jobs is something I'm deadly serious about. "Making jokes at the expense of your career trajectories" isn't what I'm about. My DMs are open if I can help.