Cloud Experimentation

Experimentation that scales for every team

Turn any feature flag into an experiment instantly to see how it impacts your user experience and your bottom line.

Self-service testing

A/B tests without extra setup

Once using Harness for release monitoring, the infrastructure for experimentation is established. Teams can conduct A/B tests via self-service tooling without requiring additional resources or complexity.

Run experiments across every team. Product, engineering, and data science teams launch and measure experiments independently, without bottlenecks or scheduling conflicts.

Convert flags to experiments easily. Your existing feature flags are already wired for experimentation, so there is no duplicate setup or new tooling to learn.

Act on results in real time. Get alerted as soon as statistical significance is reached so you can take action quickly.

Experiment Results · checkout_flow_v2

Conversion rate↑ +8.2% lift
Day 1Day 14
p-value
p < 0.05
statistically significant
Conversion Lift
+8.2%
vs control group
MetricImpactSig.
Conversion rate+8.2%
Revenue per user+5.3%
Cart abandonment-14%
Patented attribution

Measure every release with precision

Our patented attribution engine monitors rollouts and enables data-driven decisions at the feature level. Integrate with Segment, mParticle, Sentry, and Google Analytics for comprehensive tracking.

Track metrics in real time. Monitor every rollout across all active flags with automatic metric collection.

Flag-level attribution. Attribute results to the exact flag that caused them. No manual correlation required.

Connect your analytics stack. Integrate Segment, mParticle, Sentry, and Google Analytics for comprehensive coverage.

Dimensional analysis

Unlock clarity with dimensional analysis

Breaking down data by country, device type, and user segment surfaces hidden insights that aggregate results miss. Understand exactly who your changes help and who they hurt.

Segment by any attribute. Break results down by country, device, plan tier, or any custom property your SDK tracks.

Discover hidden patterns. A neutral overall result can hide big wins in one segment and losses in another. Find both.

Target winning segments. Ship to the segments where the experiment won and hold elsewhere until you iterate.

Unified experimentation

Centralize experiments to a single source of truth

Unified metric definitions and result calculations eliminate fragmented approaches across teams. Every experiment references the same metrics, so results are always comparable and stakeholders stay aligned.

Unified metrics library. Define metrics once and reuse them across every experiment. No more conflicting definitions or duplicate tracking setups across teams.

Shared results and impact cards. Metric Impact Cards and Detail Charts make it easy to share findings and drive stakeholder alignment without manual report-building.

Cross-team collaboration. Centralized notifications and streamlined workflows keep product, engineering, and data science moving together.

What our customers say

Teams are releasing features faster with Harness

12x

increase in release frequency

64+

versions of the app testing simultaneously in production

Harness makes it possible to really understand how our users respond to changes we make. Now it's easy to know the best change for our users and how we can help them satisfy their creative journey.

Jean Steiner, Ph.D., VP of Data Science, Skillshare

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FAQ

Frequently asked questions

Cloud Experimentation lets you turn any feature flag into a controlled experiment instantly. You define metrics, Harness handles the assignment and analysis, and you get statistically rigorous results without standing up separate A/B testing infrastructure.

Harness supports both sequential testing and fixed-horizon testing. Sequential testing lets you reach decisions as soon as significance is detected, which is ideal for rapid iteration. Fixed-horizon testing applies stricter statistical rigor for high-stakes decisions like revenue and conversion experiments.

Harness's patented attribution engine automatically connects metric changes to the exact feature flag that caused them. It tracks metrics in real time across every rollout and integrates with analytics providers like Segment, mParticle, Sentry, and Google Analytics so you never have to manually correlate results.

Yes. Any active feature flag in Harness FME can be converted into an experiment with a few clicks. You select your target metric, define the experiment window, and Harness begins tracking assignment and metric data automatically.

Harness surfaces statistical significance in the results dashboard as data accumulates. With sequential testing, you receive a decision as soon as the threshold is crossed. With fixed-horizon testing, results are surfaced at the end of the predetermined sample period with full confidence intervals.

Get started with Harness Cloud Experimentation

Enable every product and engineering team to run experiments without bottlenecks.