Logging, Metrics, and Tracing — the Three Pillars of Observability
Observability is what separates teams that react to outages from teams that understand their systems before failure. This track covers the full stack: structured logging, time-series metrics, and distributed tracing, with hands-on work in two of the industry's dominant toolchains — the ELK Stack (Elasticsearch, Logstash, Kibana) and OpenTelemetry. Whether you are instrumenting a monolith or a multi-service cloud-native application, the skills here are directly applicable to production environments.
What You Will Learn
You will start with the fundamentals of system observability and structured application logging, then move into collecting and interpreting system metrics and building your first ELK Stack pipelines. You will learn OpenTelemetry's core concepts — spans, traces, context propagation — and implement distributed tracing across services. At the advanced level you will apply techniques like Advanced ELK Stack Techniques, complex observability patterns, security and performance instrumentation, and full cloud-native observability. The track culminates in designing and building a complete observability platform from the ground up.
The Learning Path
Twelve focused courses span levels A1 through C2. The track opens with Introduction to System Observability (A1, free) and Getting Started with Application Logging, then builds through four B-level courses covering metrics, ELK fundamentals, OpenTelemetry core concepts, and distributed tracing. The final five courses operate at C1–C2: Advanced ELK Stack Techniques, Advanced Observability Patterns, Observability in Cloud-Native Environments, Security and Performance with Observability, and the capstone Building an Observability Platform.
How It Works
Each course is split into short, hands-on lessons you complete in the built-in editor with real-time feedback and an AI tutor available when you get stuck. You work with real configuration, real queries, and real instrumentation code — not toy examples — so every lesson maps directly to tasks you will face on the job.
