Application Observability with Elastic by Sabharwal & Shukla (Pbk) (2022) GOOD
The fact that it focuses on container/Kubernetes world is valuable since many systems are now cloud-native and observability patterns differ compared to monoliths. If you are working with or planning to work with observability for distributed/cloud-native applications, this book provides a focused and practical path — especially if you’re using Elastic (or willing to learn it).