Spotify drives engagement by blending personalization with cross-device access...

https://technivorz.com/why-do-push-notifications-pull-me-back-into-apps-and-how-theyre-engineered-to-do-it/

Spotify drives engagement by blending personalization with cross-device access and community features. Using gaming mechanics and digital wallets, they create a seamless user experience. Through deep analytics, the content stays relevant to your habits