Application Performance Management (APM) is a discipline within systems management that focuses on monitoring and managing the performance and availability of software applications. Coursera's APM catalogue teaches you how to detect and diagnose complex application performance problems to maintain an expected level of service. You'll learn about different APM tools and technologies, how to measure application performance, managing the end-user experience, tracking business transactions across multiple tiers, and how to analyze performance metrics. This skill is essential for professionals in IT operations, application support, and quality assurance roles.