How CircleCI transformed their own continuous delivery using LaunchDarkly.

Feature flags allow teams to separate feature rollout from code deployment, and are fast becoming a best practice for DevOps.


Team Members on LaunchDarkly

Feedback Loop

Primary Use Case

Java & JavaScript


CircleCI was founded in 2011 with the mission of giving every developer state-of-the-art automated testing and continuous integration tools. Today, they are a modern continuous integration and delivery platform that is shaping the landscape of modern DevOps.

I really like LaunchDarkly, and I'm glad we're using it. I believe that feature flags are a critical piece of modern development, and LaunchDarkly brings this part of continuous delivery to the masses.

Rob Zuber, CTO, CircleCI

Before LaunchDarkly

While CircleCI had engineers on staff who were savvy in feature flagging systems, they didn't want the stress of building or maintaining something more sophisticated. Despite the perceived value of such a system, they didn't want to take focus off of their core business.

Why CircleCI Chose LaunchDarkly

When they heard that buying a feature flagging system was an option, they jumped right in with a trial. Shortly after, they had implemented LaunchDarkly across the entire engineering and product teams and immediately started to see the results.

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