Improved collaboration. The average enterprise uses almost 1,200 cloud applications (link resides outside IBM.com), many of which are disconnected. But they offer other significant benefits to developers and organizations at large. There is no visibility on the user interface, meaning APIs exchange data within the computer or application, and appear to the user as a seamless connection.ĪPIs simplify design and development of new applications and services, and integration and management of existing ones. While the data transfer will differ depending on the web service being used, the requests and responses all happen through an API. The API transfers the data to the initial requesting application, here the product website. The server sends a response to the API with the requested information. This request is processed from an application to the web server via the API’s Uniform Resource Identifier (URI) and includes a request verb, headers, and sometimes, a request body.Īfter receiving a valid request from the product webpage, the API makes a call to the external program or web server, in this case, the third-party payment system. When the buyer clicks the payment button, an API calls to retrieve information-also known as a request. This function relies on APIs to make the connection. When a user purchases a product on an ecommerce site, they may be prompted to “Pay with Paypal” or another type of third-party system. A simple way to understand how APIs work is to look at a common example-third-party payment processing.
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