While it might be an 'industry wide acronym' and it might make sense for people with experience [1] it is not immediately apparent to certain people who would like to try AWS or who aren't doing these things for a living.
Things should be labeled easily for the lowest common denominator. If you want to use an acronym it should appear after the full name of the item.
Not this: IAM
But this: Identity and Access Management (IAM). And the full description should appear everywhere. Not just in one place (like in a legal contract or the beginning of Jeff Barrs blog post) but everywhere.
Why not? Why not do everything to make it easier. It's not like we are talking a printed piece where space matters. People reading on mobile? So what still spell it out. There are always new users who don't know the jargon.
And if you want to have an express page then take the verbose page and make an express page from it for people who don't want it spelled out.
[1] Just like people with experience know what a MAC address is vs. a Mac Computer