Rakuten music prepared two groups: A) AIris expanded user list from existing user list who subscribed the service more than 3 months, and B) User list who are likely to use Rakuten music, except for the list A. List A largely exceeded both click through rate (CTR) and the number of “like”. Also, two-month continue rate of the list A exceeded by more than 10%. This signifies the use of AIris in ensuring the right customer segment is targeted with the correct content, thereby increasing both revenue while delighting the customer.