As systems grow more complex, engineering teams must move beyond guesswork when resolving production issues and instead focus on delivering consistent, measurable user value. This talk explores how OpenTelemetry empowers teams to define, measure and improve Service Level Objectives with precision and confidence.

Drawing on real-world experiences of a software team navigating the challenges of legacy code, cloud migration and production instability, this session demonstrates how OpenTelemetry helps teams gain the insights they need to reduce Mean Time To Resolution, understand root causes and proactively improve system reliability.

We’ll dive into hands-on examples using the OpenTelemetry Demo Application and show how to help turn technical metrics into business-aligned SLOs that actually mean something. Whether you're an SRE, developer, or engineering leader, this talk will give you the clarity—and tools—to move from reactive firefighting to proactive service reliability.

Martin McLarnon is an engineer with almost 30 years experience working in many different roles within IT. He has worked as a Network Manager, Software engineer, Cloud Architect, Engineering lead and worked as an engineering consultant before joining Coralogix.