APIs for Beginners: What They Are and How They Work

22/11/2025 11 min
APIs for Beginners: What They Are and How They Work

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Episode Synopsis



This story was originally published on HackerNoon at: https://hackernoon.com/apis-for-beginners-what-they-are-and-how-they-work.
A beginner's guide to what an API is, what frontend, backend, server, and JSON are, and how communication between programs happens over the Internet.
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This article demystifies APIs using everyday examples, showing how programs communicate, how endpoints work, and why APIs power everything from marketplaces to modern web apps.


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