Padlet is an online tool that allows users to create virtual boards for sharing ideas, notes, and multimedia content. It provides a simple interface where users can post text, images, videos, and links, making it a versatile platform for collaboration and brainstorming. Users can customize their boards with different layouts and backgrounds, making it visually appealing. Padlet is commonly used in educational settings, workplaces, and community projects, enabling teams to work together in real-time and organize information effectively.