From 0 to Tens of Thousands of SLOs in Under a Year: How Expedia Group Used Automation to Scale

At Expedia Group, thousands of engineers deploy to production daily across hundreds of services. But managing reliability at that scale isn’t just about setting targets, i. It’s about building systems and a culture that makes those targets meaningful and sustainable.

Just three years ago, Expedia had just a few dozen service-level objectives (SLOs). Today, they have over tens of thousands of actively used SLOs, adopted across a wide range of teams and tech stacks.

In this talk, Dina Abu Khader, Reliability Software Engineer at Expedia Group, shares their three-step process to get there: automation, adoption, and governance.

First, she’ll walk through the internal tools they built to streamline SLO creation, validation, and alerting—making it easy for teams to adopt SLOs without becoming experts in SLIs or error budgets.

Then, she’ll cover how setting up regular office hours to support teams created a consistent, low-friction way for engineers to ask questions, troubleshoot real scenarios, and share what was working. Over time, it built a community of practice that helped SLO adoption stick.

Finally, she will explain that, as SLOs scaled, governance became crucial. Ensuring quality required guardrails to maintain the SLOs meaningful and actionable as they evolved.

This session is for anyone trying to scale SLOs in a fast-moving environment. You’ll hear what worked, what didn’t, and get ideas you can take back to your org—whether you're just starting or scaling up.