The Experimentation Edge

Think pest control isn’t a digital business? Think again.

Raj Mehta, Vice President of Product and Technology at Moxie Pest Control, outlines how he turned a spreadsheet-run operation into a data-driven engine across 9,000+ daily calls.

Raj shares how consolidating fragmented systems into a data lake unlocked automation—from shrinking lead routing from 20–25 minutes to under 30 seconds—to deploying AI-powered ...

Summary
What do you test rigorously—and what do you ship fast and fix forward—when every change could impact millions?

Vinoj Kumar, Vice President of Engineering at Upwork, leads at the intersection of infrastructure and product, where feedback loops are longer and the blast radius is wider.

He shares a pragmatic framework for experimentation—blast radius x reversibility—that sets testing rigor, plus how he...

AI is moving so fast that what “good” looked like a few months ago is already outdated.

So how do you measure value, ship safely, and scale what works? Marco Casalaina, VP of Products, Core AI and AI Futurist at Microsoft, joins to unpack how his team builds and evaluates next‑gen AI—at hyperspeed.

Marco leads the AI Futures team and previously led Azure OpenAI, Azure Cognitive Services, Responsible AI, and AI Studi...

How do you boost developer velocity in a highly regulated industry—without sacrificing safety or customer trust? Charles Williams, Senior Vice President and Software Engineering Director at Truist (formed from the BB&T and SunTrust merger), shares how his team elevates developer experience to ship faster and more reliably. Charles breaks down shifting quality “left” with automation, measuring success with both...

Summary
How do you build a culture where nothing ships without evidence—and leaders actually act on the data? Makram Mansour, Head of Marketplace at ID.me and former experimentation leader at LinkedIn and Intuit, shares the systems, mindsets, and guardrails behind “experimenting everywhere.” At LinkedIn, he helped support 10,000+ annual experiments with 2,000 weekly platform users, and he explains the hard-earn...

Summary
How do you drive hypergrowth without guessing? Kameron Tanseli, Head of Growth Engineering at Fyxer—an AI assistant for your email—breaks down the experimentation playbook that helped the company scale from $1M to $35M ARR, with sights set on $100–$150M. Kameron explains how startups should think about A/B testing differently: de-risk big bets, not just button colors. He shares a risk-based approach to ...

Summary
What happens when A/B testing stops being a tool and becomes your operating system? Suresh Teckchandani, VP of Product & Technology at Ancestry (formerly PayPal and eBay), shares how the team scaled experimentation from isolated tests to capability-building that drives roadmap and revenue. He details the “growth metering” and paywall experiments that unlocked a 5.3% lift in key engagement and improved con...

Summary
Chess.com ran its first A/B test in 2023. Two years later, the team is on track to run 1,000 experiments in a single year—and they've already shipped 195 in Q1.

In this episode, Ashley Stirrup sits down with Nafis Shaikh, Director of Product Management at Chess.com, to get inside the experimentation engine powering one of the world's most beloved gaming products.

Nafis brings experience from Zynga and Prodigy and a r...

Summary
Most e-commerce companies test a handful of features each month. Fanatics runs nearly 100 experiments monthly and delivers a big portion of the company's total annual growth through experimentation alone. Medha Umarji, VP of Growth and Experimentation at the multi-billion dollar sports merchandising retailer, explains how she built a program that scales from 10 tests per month to 100—and maintains enough rigor to s...

This episode of The Experimentation Edge shows how UPS's A/B testing program drove $500M+ in incremental revenue across 80+ customer-facing applications. Dave Massey — head of the J.E.D.I. team (Journey Experience and Design Innovation) — walks through the first test that proved UX could move revenue, how he defended counterintuitive results to skeptical execs, and how a small experimentation team can override opinion w...

This episode of The Experimentation Edge unpacks how DoorDash's experimentation platform runs 12,000+ A/B tests per year across 42 million monthly active users — and now powers merchant-led testing on menu pricing and promotions. Ilya Izrailevsky, Senior Engineering Manager leading the platform, explains how feature flags, marketplace experimentation, and CEO-level experiment reviews built a multi-million-dollar experimentati...

This episode of The Experimentation Edge explores how A/B testing, feature flags, and user research transformed Atlassian's talent product after it failed with its first users. Andrew Willingham — 11 years at Amazon, now Head of Legal and People Products at Atlassian — shares how product experimentation works when you can't test at scale, why your customer and your user are not the same person, and how the metrics you c...

Summary
On this edition of The Experimentation Edge, Ashley Stirrup talks with Geoffrey Bell, Experimentation Product Specialist at Ford Credit, about building an experimentation practice inside a captive auto lender. Geoffrey shares the losing test that earned his program credibility, the "experimentation piggy bank" he picked up at Microsoft, and the breakthrough of connecting online experiments to offline dealership receivabl...

Summary
RingCentral's Director of Product Management for AI Products, Mayank Agarwal, joins host Ashley Stirrup to dismantle the metrics most teams use to judge AI agents. Drawing on his background founding an AI-first quantitative trading firm and scaling Groupon's bookable marketplace, Mayank explains why accuracy and thumbs-up/down feedback both mislead, and introduces DART — a four-metric behavioral framework (decay, a...

Summary
Craig Kistler, VP of Experience Design, Personalization, and Experimentation at Signet Jewelers (the parent company of Kay, Jared, Zales, Peoples, and Banter), joins host Ashley Stirrup on The Experimentation Edge to unpack how a hybrid online-and-in-store jewelry retailer runs experimentation at scale. Craig shares the counterintuitive "view all" experiment where his team blocked the product grid, added friction on purp...

Summary
What do you do when your big launch increases engagement and tanks conversion? On this episode of The Experimentation Edge, host Ashley Stirrup talks with Lina Blackman, Director of Product Analytics at Squarespace, about the blank template launch that flopped — and how its learnings became Blueprint, Squarespace's AI-guided website builder. Lina explains how her embedded analyst team runs 150–200 experiments...

Summary
How do you make a high-stakes product decision when the safe choice is to never test it at all? In this episode of The Experimentation Edge, host Ashley Stirrup talks with Arun Bodapati, director of data science at Twitch, about the discipline behind trustworthy experimentation. Drawing on his experience at Schwab, Uber, and Twitch, Arun explains why false negatives are the most dangerous result a team can produce, what ...

Summary
How do you know if the thing you just shipped actually worked? On this episode of The Experimentation Edge, host Ashley Stirrup, CMO of GrowthBook, sits down with Kevin Yang, Executive Director and Head of Experimentation at JPMorgan Chase, who has spent six years building experimentation across Chase's digital platforms. Kevin shares how his team turned experimentation into more than a billion dollars of estimated value...

Summary
What does it look like to kill a multimillion dollar feature before anyone builds it? In this episode of The Experimentation Edge, host Ashley Stirrup talks with Crystal Ammari, a digital product optimization and experimentation strategy leader whose career spans Nike and The Walt Disney Company. Crystal shares the "dry test" that used a single fake button to measure demand for video chat (4 million users, 106 clicks), w...