Seeing the Unseen: Observability for your JavaScript apps

About this talk

Most JavaScript apps ship without any real visibility into what happens after deployment — errors go unnoticed, slow requests are invisible, and debugging in production means guessing. This hands-on workshop at Web Summer Camp 2026 introduces the three pillars of observability (metrics, logs, and traces) through practical exercises with a real demo application. From setting up smart alerting with AI-powered anomaly detection to building distributed traces with OpenTelemetry, attendees leave with a working observability setup and the mental model to extend it — no prior observability experience required.

Key takeaways

• What the three pillars of observability are and why each one matters for JavaScript apps
• How to instrument a JS application with OpenTelemetry for vendor-neutral telemetry
• Setting up intelligent alerts that reduce noise and surface real problems faster
• Reading distributed traces to pinpoint the exact cause of a slow or failing request
• Designing a cost-effective observability pipeline without drowning in data