Profit margins in the digital publishing business leave no place for flirting with expensive experiments. How to choose an appropriate approach to personalization that works well not only in theory but in the real world? How to ensure cost-efficiency & future-proofness not covered by academic research? How to respond to changing business requirements in no time? Come to this session and draw from the experience of building a pragmatic, real-world personalization platform for 30M users of Ringier Axel Springer.