How can micro-interactions enhance user engagement in digital interfaces?

Micro-interactions are subtle, interactive design elements that respond to user actions, providing immediate and intuitive feedback. They can range from simple button animations to complex visual feedback when a form is completed. By engaging users and creating a more fluid experience, micro-interactions can significantly improve user satisfaction and retention. In the context of UI/UX design, this question explores the role of these small details in bridging the gap between user intent and interface response, ultimately enhancing the overall usability of digital products. How can designers strategically implement micro-interactions to maximize their impact on user engagement without overwhelming the interface with unnecessary complexities?