Split.io

Feature flags plus experimentation

Feature management platform with built-in statistical experimentation and business impact analysis.

Our take

Split.io positions as the feature flag + experimentation platform, where the experimentation piece is genuinely first-class. Unlike LaunchDarkly where A/B testing is an add-on, Split treats statistical significance, guardrail metrics, and impact analysis as core capabilities. When you roll out a feature to 20% of users, Split automatically measures the effect on conversion, latency, error rate, and any custom metric you define — without a separate experiment tool. The integration with product analytics tools (Segment, Amplitude, Mixpanel) lets Split use behavioral events as experiment metrics, which is powerful. The tradeoff vs LaunchDarkly is SDK ecosystem maturity and enterprise trust — LaunchDarkly has more language SDKs, a longer enterprise track record, and broader DevOps integrations. Split makes sense for teams where A/B testing is a first-class engineering workflow rather than a product/marketing add-on.

Product roadmap

Split (acquired by Harness in 2023) is integrating with Harness's CI/CD platform to enable deployment + feature flag + experiment as a unified release workflow. The combined platform connects code deployment (Harness CD), feature gating (Split), and business impact measurement (Split experimentation) in one pipeline.