Adobe InDesign is a professional page layout and design software developed by Adobe Systems. It is primarily used for creating and designing print materials such as brochures, magazines, newspapers, and books, as well as digital publications for tablets and other devices. It also includes tools for creating interactive documents and forms, and supports a wide range of file formats for import and export. InDesign is a popular choice among graphic designers, publishers, and marketers for its advanced layout and design capabilities, as well as its integration with other Adobe software such as Photoshop and Illustrator.