As software grows in size and complexity, rolling out new features in a highly distributed application, and understanding their impact, becomes an increasingly difficult task. OpenFeature and OpenTelemetry provide a set of vendor-agnostic and cloud-native APIs and SDKs for dynamic feature flag evaluation, and cloud-native observability.

In this session, we walk through the process of instrumenting an application with OpenTelemetry, rolling out a new feature with OpenFeature, and leveraging OpenTelemetry for feature analytics. We will discuss the tradeoffs between traces, metrics, and the new events API, when each is appropriate, and how to make the same decision for your own application. We show that by using OpenTelemetry and OpenFeature together, you can easily understand the impact a feature has on your users' experience across cohorts, regions, and environments to make informed, data-driven decisions.