The National Library of the Netherlands (Koninklijke Bibliotheek) manages the website bibliotheekonline.nl (library online), where you can have access to over 22,000 e-books and 2,200 listening books. The KB gathers a lot of data on website visitors and are interested in the visitors flow on the website and their behavior. Who are most likely to stop making an account? And in which step? From which platform did they access the website? The team on this project helps to improve and gain more insight into the website of the KB using data analytics!