Looks like a great outline for an important topic! A few thoughts:

1. Given the title, I was expecting a more traditional Cookbook style book. I.e., "How do I..." followed by one or more recipes to answer the question.

2. The blueprint on page 39 is a good start: it includes the 4 main processes for data engineering. However, Display is only one use case. Training models, for example, is another. It also ignores real-time vs. batch processing. This comes up later in the book, but could be diagrammed more clearly. There are a lot of recipes for the overall architecture, and for each subprocess.