Testing smarter, building faster

Vivian Lam, Head of Tech at FanDuel Racing

The challenge

Before integrating Amplitude, FanDuel Racing relied on custom-built feature toggles to manage new releases. While functional, this system lacked flexibility and insight. Rolling out a feature meant toggling it “on” or “off” for all users, with little control over who experienced what – and no direct link to performance data or user feedback.

As the team began exploring new experiences, such as the next-generation Race Page for the Cross-Sell (X-Sell) app, it became clear that a more agile, data-informed approach was needed. The challenge was simple but critical: how can we validate usability and engagement early, before committing full development resources?

The solution

Mindera worked closely with the FDR technology team to integrate Amplitude Experiments, enabling controlled, measurable, and incremental feature rollouts.

Amplitude allowed the team to:

• Target specific user groups — from small cohorts to wider audiences – based on behavior, geography, or app usage.
• Launch experiments gradually, starting with a limited percentage of users and scaling as confidence grew.
• Monitor results in real time, linking performance metrics, engagement, and retention directly to experimental variants.
• Decide faster whether to iterate, pivot, or roll out fully, grounded in actual user data rather than assumptions.

Most importantly, this shift wasn’t about promoting one tool – it was about embedding a culture of continuous learning and validation. Integrating Amplitude into the existing FDR architecture turned experimentation into a core part of the product workflow, not an afterthought.

The outcome

The impact was immediate. The FDR team could now test new features within days, not weeks, and observe how users interacted with them in live conditions. Product, Design and Analytics teams gained actionable insights — understanding not just what users did, but why they behaved that way.

Vivian Lam, Head of Tech at FanDuel Racing

This approach reduced the risk of investing in features that didn’t resonate, improved confidence in design decisions, and shortened the path from concept to launch.

By integrating a flexible experimentation framework, FanDuel Racing became faster, more adaptable, and more connected to its users — ensuring every product iteration moves in the right direction, for the right reasons.

Key benefits

• 90% Reduction in Data Analysis Time
• 1.5x Faster Experiment Speeds
• Opt-In Rate increased significantly by 5% or more.
• Median Time to Opt-In decreased, significantly by 25% or more.
• Bet Conversion Rate increased significantly by 5% or more

Commenting on the project, Vivian Lam, Head of Tech at FanDuel Racing, said: "Moving to Amplitude Experiments transformed how we validate features. We've cut our experiment cycle time by more than half and can now make data-driven decisions with confidence. The 90% reduction in analysis time means our teams spend less time debating and more time building what our users actually want."

Get in touch to discuss implementing a more agile, data-driven approach.

About FanDuel Racing

Fanduel Racing is an Oregon-based betting site and television network that’s synonymous with horse racing in the USA. With trillions of wagers placed every year, Fanduel Racing relies on its top-class infrastructure and reporting tools to keep performance on track and deliver a great service for its customers.