This is singlehandedly the worst textbook I have ever used in my life. The code samples have copious errors. The screenshots of services like AWS are so blurry they are illegible. The lab questions are obtuse and do not provide the necessary resources such as required input data files which makes the questions impossible to complete without a massive number of assumptions and workarounds. This book has caused me nothing but extreme dissatisfaction and I would recommend that no one ever waste their time with this text.