Sliders should offer instant, intuitive interaction. As soon as users move the thumb along the track, the changes should be immediate, offering real-time feedback. This eliminates the need for a separate "Submit" or "Apply" button, streamlining the user experience. By doing so, you make it straightforward for users to understand the impact of their actions, without adding unnecessary steps. Immediate feedback not only enhances usability but also helps users feel more in control.^[1]