In user metrics, what does "stickiness" refer to?

Stickiness in the context of user metrics refers to the ability of a product or service to keep users returning over time. It is a measure of user retention, reflecting how effectively a platform engages users and encourages them to come back regularly. High stickiness indicates that users find value in the product, leading to habitual usage and long-term loyalty.

User retention captures this concept well, as it shows the percentage of users who continue to engage with the product over a specified period. In contrast, user acquisition focuses on attracting new users, while user interactions examine how often users engage with specific features. Daily engagement typically looks at the frequency of user activity but does not necessarily capture the overarching concept of retention as effectively as stickiness does.

Therefore, the correct choice highlights the importance of retaining existing users by fostering an environment that encourages repeated use, which is critical for long-term success.