Api

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  REST vs SOAP APIs: The key differences explained for beginners

  Kenny Lee

  Updated 10/27/25
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  How to get a YouTube API key [tutorial + examples]

  Clinton Joy

  Updated 9/23/25
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  Application programming interface: How APIs work and how to manage them

  Clinton Joy

  Updated 12/10/25
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  API Calls: What They Are & How to Make Them in 5 Easy Steps

  Clinton Joy

  Updated 4/29/25
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  55 Free Open APIs for Marketers & Content Developers

  Allie Decker

  Updated 1/23/25
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  What Is an API Endpoint? Examples + Pro Dev Tips

  Jamie Juviler

  Updated 12/3/24
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  What is the cURL Command?

  Jamie Juviler

  Updated 4/16/24
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  X API Guide for Non-Techies: How to Use It If You Don't Code

  Clint Fontanella

  Updated 6/28/21
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  REST APIs: How They Work and What You Need to Know

  Jamie Juviler

  Updated 8/9/23
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  12 Essential Book APIs

  Atul Jindal

  Updated 4/1/24
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  25 Best API Testing Tools for Building Functional, Secure Applications

  Jamie Juviler

  Updated 1/17/24
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  What is Payload? A Quick Guide [+ Examples]

  Danielle Ellis

  Updated 1/9/24
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  The Marketer's Guide to API Integrations

  Jamie Juviler

  Updated 1/8/24
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  What Is an Idempotent API?

  Danielle Ellis

  Updated 8/8/22
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  25 REST API Interview Questions and Answers You Should Know

  Jamie Juviler

  Updated 12/13/23
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  55 Important API Testing Interview Questions & Answers

  Danielle Ellis

  Updated 11/15/23
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  What Is API Documentation? [+ How to Write and Read It]

  Anna Fitzgerald

  Updated 9/26/23
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  API Mocking: Meaning, Tools, and Examples

  Marquel Ellis

  Updated 9/12/23
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  API Rate Limiting — Everything You Need to Know

  Marquel Ellis

  Updated 8/22/23
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  What is an API Key? (And Are They Secure?)

  Jamie Juviler

  Updated 8/15/23