Ashley Stirrup

A 5-pixel change almost cost LinkedIn $10M a year. A designer adjusted the padding on the top ad banner. No test. Just pushed it live. It reduced the visibility of one of LinkedIn's highest-performing ad slots. Click-through rate dropped 40%. That slot drove about 25% of total LinkedIn Ads revenue at the time. They caught it. They rolled it back. But the damage to how they thought about shipping was permanent. By the time Makram Mansour was managing LinkedIn's experimentation platform, the culture had transformed completely. 2,000 people were logging in weekly to check on running A/B tests. Including the CEO. That's what experimentation obsession actually looks like. Not a dashboard nobody reads. The CEO of one of the world's largest professional networks, watching experiment results in real time. It wasn't mandated from the top. It was earned — by learning the hard way that at scale, there is no such thing as a small change. When will experimentation become strategic at your company? Don't wait for your $1M drop. Full episode with Makram in the first comment 👇 #ABTesting #Experimentation #ProductManagement #ExperimentationCulture

Only one snapshot so far — the engagement-over-time curve appears once the daily scrape has captured this post at least twice.