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Guest Spotlight: Mi Tian

Mi Tian, Head of Applied Science at Zalando
Mi Tian
Zalando | Data Scientist

About Mi Tian

Mi Tian is Head of Applied Science at Zalando, part of the central economics and experimentation org reporting to the chief economist and CFO. With a PhD in electronic engineering and a background in data science and user engagement, she helps steer more than 1,000 experiments a year, connecting each one to Zalando's North Star through KPI trees and risk-tiered measurement strategies.

Notable Quotes

"A good experiment starts from clear goals and clear hypotheses. What product change do you want to create, and how is it expected to impact our end users or our business?"

"We try to really balance the experimentation portfolio to not limit ourselves on the small experiments only."

"Some others are game-changing ones. Those are riskier. They could give us negative results, but it could also change the game and help us win big."

"We're far from replacing real A/B tests with agents. But maybe we can get a cheaper and faster simulation layer just to screen all these hypotheses so we can prioritize the high-impact hypotheses better and run them on the real traffic."

"It is a longstanding business, but we have new missions, we have new challenges."

How Zalando connects every experiment to its North Star with Mi Tian
Mi Tian
Zalando | Head of Applied Science

How Zalando connects every experiment to its North Star

Go to S1 | E39

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Takeaways

All Takeaways

Use LLM based agents as a cheap simulation layer to screen hypotheses, not as a replacement for real A/B tests.

Go to S1 | E39

Connect every experiment to the company North Star by cascading it down to sensitive proxy metrics and controllable inputs.

Go to S1 | E39

When a launch is too new to have a success metric, pair short term A/B tests with long term holdouts from day one.

Go to S1 | E39

Assess risk tiers when building the roadmap so measurement rigor scales with the stakes instead of slowing every decision down.

Go to S1 | E39

Treat experimentation as a portfolio: balance confirmatory tests that protect the business with game-changing bets that can win big.

Go to S1 | E39
The experimentation edge podcast logo with a picture of host Ashley Stirrup