"Building Microservices: Designing Fine-Grained Systems" by Sam Newman is a comprehensive textbook focused on the design and implementation of microservices. Published by O'Reilly Media, this 2021 publication covers a wide range of subjects including programming, engineering, web programming, and enterprise applications. With 612 pages and insights on how to create cohesive and efficient systems, this trade paperback is a valuable resource for those looking to deepen their understanding of microservices in the tech industry.