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  1. What is an API (Application Programming Interface)

    Dec 15, 2025 · API architectures define how systems communicate and exchange data, each offering different levels of flexibility, performance, and structure based on application needs.

  2. What Are API Functions? (Types, Components and 3 Examples)

    Jul 24, 2025 · Learn what API functions are, explore the different types, review an explanation of their components and examine three examples of how you might use them.

  3. What is an API? A Beginner's Guide to APIs | Postman

    Developers use APIs to bridge the gaps between small, discrete chunks of code in order to create applications that are powerful, resilient, secure, and able to meet user needs. Even though you …

  4. What is an API and How Does it Work? APIs for Beginners

    Dec 5, 2022 · There are four types of methods for HTTP requests which we will get back to in a moment. For now, just know that a method indicates what you want to do with the data …

  5. What is an API (application programming interface)? - IBM

    Nov 3, 2023 · APIs give application owners a simple, secure way to make application data and functions available to both internal and external API consumers. APIs are predefined …

  6. Function calling - OpenAI API

    Learn how function calling enables large language models to connect to external data and systems.

  7. Introduction to web APIs - Learn web development | MDN

    Nov 30, 2025 · First up, we'll start by looking at APIs from a high level — what are they, how do they work, how to use them in your code, and how are they structured? We'll also take a look …

  8. What is an API? - Application Programming Interfaces Explained

    API stands for Application Programming Interface. In the context of APIs, the word Application refers to any software with a distinct function. Interface can be thought of as a contract of …

  9. What is an API? Application programming interface explained

    Sep 10, 2025 · APIs (application programming interfaces) are rules that allow different software systems to communicate and share data efficiently. What is the importance of APIs? APIs …

  10. What is an API? How APIs work, simply explained - Contentful

    Jan 15, 2025 · In this guide, you'll find everything you need to understand the fundamentals of APIs, how they enable seamless integration between systems, and why they are essential for …