Drag-and-Drop is a user interface interaction technique that allows users to select an item, move it to a different location, and release it. This is typically done using a mouse or touchpad, where the user clicks on an item, holds down the button, moves the cursor to the desired location, and then releases the button to drop the item. This method is commonly used in various software applications, such as file management systems and graphic design programs, to simplify tasks like organizing files, moving images, or rearranging elements on a screen. It enhances user experience by providing a visual and intuitive way to manipulate objects.