About

I research, teach, and advise on customer strategy: how companies acquire, grow, and retain customers. Profitably.

I am a Professor at the Frankfurt School and a former consultant at BCG. My research on customer strategy, e-commerce and digital marketing is published in the leading business journals; right now it focuses on what AI assistants such as ChatGPT mean for the companies that sell online.

In executive education I work with organizations across Germany, Europe and the Middle East, in customized company programs and in one-on-one coaching for senior leaders in customer-facing roles. I speak at industry conferences and corporate events. At Frankfurt School I teach Customer Strategy, Digital Marketing Strategy and Evidence-Based Management in the Master, MBA and Executive MBA programs.

I host the Customer Strategy Dialogue and the Customer Strategy ProfCast, co-founded the YES Marketing research network, and am a frequent interview partner for national and international media, such as ARD, ZDF, Deutschlandfunk, Bloomberg, The Economist or the Frankfurter Allgemeine Zeitung.

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