I've read it just after "Data Science on AWS" (published by O'Reilly) and it's definitely the better of those two books. This definitely is some sort of surprise, because O'Reilly is quite known due to the high bar of quality while PacktPub, well ... not really :)
Anyway, what did I like and not like about this book?
1. It's actually possible to learn stuff based thanks to this book. Scenarios are reasonable, well-paced, quite well explained and simple enough. They are STILL focused on AWS services (not classes of the problems to be solved), but the final effect is far better than the chaotic cocktail from "Data Science ..."
2. Examples use a lot of interesting public data sets. By 'interesting' I mean really interesting - you really want to play with this stuff.
3. There are very few distractors - topics that do not really belong and just artificially increase the size of the book.
4. The chapters with practitioners' advice are VERY good. No generic bullshit - this stuff is really helpful. I mean chapters: 9, 10, 13.
5. The structure of the book supports splitting it up, so e.g. individual chapters can be published as long blog post series or booklets. That's a great idea, but sometimes a bit annoying (e.g. because of some repetitions).
6. As always, PacktPub sucks incredibly when it comes to formatting. I was reading this book via Safari Online and the code samples were VERY hard to read - that itself should decrease the book's rating my 1 star. It's unacceptable in 2021.
7. I praise this book, but it's still far from how I imagine a good intro book on managed AIML services on AWS. As I've mentioned, it's driven by the structure and organization of AWS services, instead of on categories and differences between real-life problems. Additionally, I miss some conceptual overview on how to design AIML services in general (using managed services). The readers know that the code samples in the book are tutorialesque and may have an actual problem of how to start "for real".
Anyway, the book is really OK. If you're interested in AIML and want a quickstart on managed services within that area - it's a reasonable choice.