Most modern applications do not function completely independently. For example, analytics, payment processing, user authentication, customer support, testing new features (experimentation), monitoring the app's performance, advertising, etc., are typically provided as third-party SDKs that enable those functions in your app.Using an SDK has its benefits; you don't have to build an entire piece of functionality yourself. When using an SDK, developers can download the software library, call the initialization method, then begin calling the API methods of the SDK to use its functionality.