As the use of APIs continues to grow, one particular style of APIs—those that are asynchronous—is showing a noticeable increase. In this incisive report, API design experts Mike Amundsen and Ronnie Mitra describe the tools you need to successfully introduce the powerful asynchronous API pattern into your organization. Based on their field experience, Amundsen and Mitra estimate that at least 60% of all API developers will need to incorporate asynchronous interactions into their APIs within the next five years. More applications today offer "instant feedback," push notifications, and streaming data. The key component is support for asynchronous APIs that push notifications and data directly to the client as soon as it's available. This report will help you get started on the basics. This report gives you all the tools you need to successfully introduce the powerful asynchronous API pattern to your organization. More and more applications today offer “instant feedback,” push notifications, and streaming data. A key component of these systems is support for asynchronous APIs - API calls that don’t rely on the RESTful client-server model but, instead, support servers that push notifications and data directly to the client as soon as it is available. This push-style interaction is at the heart of asynchronous APIs.