ProLesson 2 of 36 min read

APIs: how apps ask other programs for data

Learn what an API is, how apps send requests to one, and how to read the data that comes back.

A weather app on your phone does not measure the weather itself. A map in a delivery app was probably not drawn by the delivery company. These apps ask other computers for data, and they do it through an API. Almost every modern app relies on APIs, so knowing how they work lets you build far more with far less code.

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