The book is ok explaining the concepts of data pipelines and the lambda/kappa architecture.
However, when it gets into practical exercices, I found it to be quite repetitive, having the same explaination over and over. Besides, going through so many technologies, the explanations given on each of them seemed either too detailed or too shallow.
I found myself skipping some chapters or skimming through them as they were a bit boring, only doing very basic analysis.
Maybe I have a problem with Azure cloud which I find very "enterprise friendly" but not much "independent developer friendly" :)