A key element in creating an attractive and functional user interface. It helps to improve user interaction with the product, making it more intuitive, fluid and appealing. Properly applied animation can direct the user's attention, emphasize important points, enhance the user's perception of information and create a more emotional connection to the application or website. However, it's important to remember that excessive or inappropriate animations can lead to distraction and even annoyance for users, so they should be used wisely and according to the design goals.