What Is APM? A Guide to Application Performance Monitoring

Application Performance Monitoring (APM) is an essential tool for measuring code behavior in production environments, enabling engineers to identify and resolve performance issues before they affect users. APM collects telemetry from services and dependencies to trace issues like latency spikes back to their source code, leveraging OpenTelemetry for standardized data capture without vendor lock-in. It encompasses both monitoring, which involves collecting and analyzing performance data, and management, which includes proactive tuning and automated fixes. APM typically functions within a broader observability framework, integrating with incident response and service level objective tracking. APM platforms use end-user telemetry, service maps, distributed tracing, and code-level profiling to provide comprehensive visibility from the browser to the database. They also offer real user and synthetic monitoring to capture user experiences and potential regressions. The challenges of APM in cloud-native environments include handling vast telemetry volumes and avoiding costly data storage, while ensuring integration with existing stacks and support for open standards. Coralogix, an example of a full-stack observability platform, processes telemetry in-stream and offers cost-effective, OpenTelemetry-native solutions that allow for seamless cross-signal investigations and effective cost management.