Observability is the ability to measure the current state of a system. Backend engineers are becoming more familiar with the primary signals and technologies, such as OpenTelemetry that can be used to instrument applications and diagnose issues. Yet, in the frontend world, we're behind the curve.

Join me as I dive into the tools and techniques we can use to instrument, monitor and diagnose issues in our production frontend applications. I'll cover RUM agents, and the metrics and traces they provide, how to combine them with backend tracing for a holistic picture. We'll dive into the state of client instrumentation in OpenTelemetry and what you can do now. Finally, we'll also show how Synthetic Monitoring and alerting in Observability platforms can help us be alerted to issues impacting users in the UIs we build and maintain.

Carly is a Developer Advocate and Manager at Elastic, based in London, UK. Before joining Elastic in 2022, she spent over 10 years working as a technologist at a large investment bank, specialising in Frontend Web development and agility. She is an agile evangelist, UI enthusiast, and regular blogger.

She enjoys cooking, photography, drinking tea, and chasing after her young son in her spare time.