LEAP and parfumdreams demonstrate that acquiring new customers alone is a money-losing strategy (initial purchases often result in a -€55 loss, with break-even only reached by the 3rd or 4th purchase). In contrast, conversion optimization drives sustainable revenue without increasing CAC, as 95% of purchasing decisions are subconscious and can be strategically influenced through psychology. Using five real-world A/B tests from parfumdreams—including cheering messages, share buttons, and a sample selector—they show how data-driven testing led to eight-figure revenue growth and 10x faster decision-making. The bottom line: companies should approach CRO in a structured way (via an in-house team, tools, or a partner with a performance guarantee) rather than relying on the status quo and gut feeling.

“As managing director, I work primarily on a strategic level and supervise internationalizations, relaunches and other projects in large companies. I am also responsible for the development of our services and solutions and am the editor of the Spiegel bestseller Better Online Sales.”

With eight years of experience in marketing and the last two years in a leadership role in e-commerce at the s.Oliver Group, I am responsible for the digital development of the s.Oliver brand. The group also includes the brands comma and Liebeskind Berlin, which together make up the group's diverse portfolio.