"Application and Infrastructure Monitoring: Best Practices and Technical Insights for IT Professionals" is an essential resource crafted for IT professionals, system administrators, developers, and managers. This detailed guide merges technical theory with practical applications, providing readers with the tools to implement robust monitoring systems that enhance operational stability and performance. From the fundamentals of metrics, logs, and traces to advanced topics like security monitoring, automation, and compliance, this book covers a vast range of necessary knowledge. As technology evolves, so does the complexity of monitoring it. This book addresses these challenges head-on, with chapters dedicated to monitoring in cloud and hybrid environments, selecting the right tools, and integrating monitoring practices into DevOps workflows. Readers will gain insights from real-world case studies that demonstrate successful monitoring strategies and common pitfalls. Whether you're looking to build a monitoring system from scratch or refine existing practices, this book will serve as both a textbook and a handbook, guiding you through the nuances of various monitoring tool