What is Application Performance Monitoring (APM)?
Turkish: APM (Uygulama Performans İzleme)
APM tracks application latency, errors, transactions, and resource use so teams can diagnose performance issues in production.
What is Application Performance Monitoring (APM)?
Application Performance Monitoring measures how a running application behaves in production. The goal is not just to know whether a server is up; it is to understand where a user request slows down, which endpoint is failing, and which dependency is affecting the system.
APM tools usually work through an application agent or SDK. They collect HTTP requests, database queries, external API calls, queue jobs, memory use, and error stack traces. When distributed tracing is supported, a single transaction can be followed across multiple services.
Questions It Answers
APM provides data for production questions such as “Why did checkout slow down after the last release?”, “Which customer segment is seeing more errors?”, or “Is the database query or the external API causing the wait?” Monitoring often tracks known signals, while observability also helps investigate unexpected behavior. APM sits between those practices.
In business applications, APM directly affects customer experience, revenue-critical flows, and operational response. A healthy setup keeps alerts low-noise, names critical transaction steps clearly, and reads performance data together with deployment history.
Related Terms
Distributed tracing follows a request across services with a trace identifier, showing where latency, errors, or retries occur.
MonitoringMonitoring tracks application and infrastructure metrics, logs, and alerts to detect problems before users or SLAs are affected.
ObservabilityObservability is the ability to understand a system's internal state from its external outputs (logs, metrics, traces) — a key DevOps principle.