When implementing personalization, a necessary first step is setting up a recommendation system to show the best information to each client at the best time, across all digital channels. The number of clicks is a good indicator of how well you are doing. It will also tell you if there are aspects of what you are displaying that could be further personalized.
An article published by The Netflix Tech Blog suggests that a good approach would be to consider the artwork or imagery used to display different possibilities. To Netflix, this translates into showing different users different thumbnails for the same movie or series. The trick is to shuffle different options to automatically test what works for each user, and based on that, decide what to show in the future to increase click probability.