The document proposes a cloud-based service for creating interactive eBooks using the EPUB format and learning analytics. Teachers would create eBooks in the cloud with various embedded exercises. Learners could then download the eBook to their device, complete the exercises, and have their results stored in the cloud. This would allow teachers to analyze learning patterns and improve the learning process through individualization. A prototype of the system was demonstrated, showing how teachers could build eBooks and view aggregate student results. The system aims to leverage the potential of interactive textbooks and big data through this approach.