Application Programming Interfaces (API) have become something commonly widespread for a lot of applications. They are used to make a central implementation of business logic requirements, which can then be easily maintained, changed, and used from multiple clients implemented in different stacks of technologies. A typical end user might not be informed about the existence of APIs, but he is most likely enjoying the benefits of APIs. Knowing that there are very popular applications that have public APIs which you can leverage for your applications, it is time to think using them a lot more.
Is there any existing API that I can use in my application?
A typical example of a public API that would hugely make your application content rich and enhance the user experience in your application would be using NASA’s public API. If you are developing an astronomy related application, and want to use all the data that NASA provides, you do not have to copy them manually and repeatedly go back and forth, trying to include the latest updates in your application. You can simply set to display the responses that you get from NASA’s API and use them directly in your application. Now each time NASA adds new content, it will automatically be added in your application as well, without asking you to make any changes later on.