Open APIs significantly enhance application interoperability by allowing diverse software systems to communicate and share data seamlessly. These interfaces enable developers to access specific features or data from external services, fostering integration between different applications. As a result, businesses can leverage multiple platforms to create more comprehensive solutions. For example, a mobile app can integrate with payment processing, social media, and mapping services through open APIs. This enhanced interoperability not only accelerates the development process but also improves the user experience by allowing users to transition smoothly between different services.