The book is targeted towards power users, administrators, and anyone interested in gaining a deeper understanding of the Android operating system's internal workings. It is suitable for those who want to explore the OS design, filesystem structure, boot sequence, and native services without necessarily being developers.
The book was written during a period of rapid evolution in the Android landscape, transitioning from KitKat to Lollipop and then to Android M. This constant evolution posed challenges in keeping the book up-to-date. The book reflects the state of Android up to Android M Preview Release 1 (June 2015).