APIs allow data, apps, and devices to interact with one another. It transfers information between devices and programs. It makes it easier to run a business while also helping users by giving real-time service access to their devices. An API integration is a connection between two or more online systems that allow them to exchange data or information by sharing their interfaces. Many high-performing firms use API integration to regulate operations that keep data in sync, increase productivity, and manage income. An online flight booking platform isn't complete until it incorporates the Air API.