The Power of Data: How to Amplify Your Audio Marketing Strategy panel discussion hosted by Zebralution Audiobook with Nicole Lüdtke (Harper Collins), Sibylle Bauschinger (bilandia), Kathrin Rüstig (BookBeat), Nathan Hull (Beat Technology) and Ralf Biesemeier (Zebralution) the panel will be moderated by Harald Henzler (smart digits).