API Crash Course: How to Create, Test, & Document your APIs — 90% Off Coupon

Everything you need to know to understand what an API is

⭐ 4.5 out of 5 Rating (38,490 students) Created by Tareek Roshdy, Nezam Academy, Nezam Team Updated: April 20, 2026 🌐 English

Key Takeaways

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Course Title: API Crash Course: How to Create, Test, & Document your APIs

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Provider: Udemy (Listed via CoursesWyn)

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Instructor: Tareek Roshdy, Nezam Academy, Nezam Team

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Coupon Verified On: April 20, 2026

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Difficulty Level: All Levels

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Category: Development

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Subcategory: Web Development

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Duration: 4h 30m of on-demand video

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Language: English

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Access: Lifetime access to all course lectures and updates

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Certificate: Official certificate of completion issued by Udemy upon finishing all course requirements

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Top Learning Outcomes: What is an API · Difference between API & Webservice · HTTP Basics

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Prerequisites: English knowledge · PC or Laptop · Internet Connection

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Price: $11.99 with coupon / Regular Udemy price: $119.99. Applying this coupon saves you $108.00 (90% OFF).

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What You'll Learn

The following technical skills represent the core curriculum targets for learners enrolling in this verified program today.

What is an API

Difference between API & Webservice

HTTP Basics

Difference between XML & JSON

How to create a mock API

How to test APIs using Postman

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Requirements

Please review the following prerequisites to ensure you have the necessary tools and foundational knowledge for this training.

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English knowledge

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PC or Laptop

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Internet Connection

About This Course

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Hello

In this course we will explain what an API is.

API is the acronym for Application Programming Interface, which is a software intermediary that allows two applications to talk to each other. Each time you use an app like Facebook, send an instant message, or check the weather on your phone, you’re using an API.

What exactly is an API? Finally learn for yourself in this helpful video from MuleSoft, the API experts.

When you use an application on your mobile phone, the application connects to the Internet and sends data to a server. The server then retrieves that data, interprets it, performs the necessary actions and sends it back to your phone. The application then interprets that data and presents you with the information you wanted in a readable way. This is what an API is - all of this happens via API.

To explain this better, let us take a familiar example.

Imagine you’re sitting at a table in a restaurant with a menu of choices to order from. The kitchen is the part of the “system” that will prepare your order. What is missing is the critical link to communicate your order to the kitchen and deliver your food back to your table. That’s where the waiter or API comes in. The waiter is the messenger – or API – that takes your request or order and tells the kitchen – the system – what to do. Then the waiter delivers the response back to you; in this case, it is the food.

Here is a real-life API example. You may be familiar with the process of searching flights online. Just like the restaurant, you have a variety of options to choose from, including different cities, departure and return dates, and more. Let us imagine that you’re booking you are flight on an airline website. You choose a departure city and date, a return city and date, cabin class, as well as other variables. In order to book your flight, you interact with the airline’s website to access their database and see if any seats are available on those dates and what the costs might be.

However, what if you are not using the airline’s website––a channel that has direct access to the information? What if you are using an online travel service, such as Kayak or Expedia, which aggregates information from a number of airline databases?

The travel service, in this case, interacts with the airline’s API. The API is the interface that, like your helpful waiter, can be asked by that online travel service to get information from the airline’s database to book seats, baggage options, etc. The API then takes the airline’s response to your request and delivers it right back to the online travel service, which then shows you the most updated, relevant information.

Meet Your Instructor

Academic background and professional track record of the subject matter expert responsible for this curriculum.

Tareek Roshdy, Nezam Academy, Nezam Team

Verified Architect

A global leader with specialized excellence in Development. Instructors are vetted for curriculum quality, responsiveness, and consistent student success across the Udemy platform.

4.8 / 5.0

Instructor Rating

94% +

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Course Comparison

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Feature Benchmarks	This Verified Offer	Global Standard
Cost Verification	FREE (100% Validated)	Fixed Subscription Fee
Enrollment Type	Professional Lifetime Access	Limited Time Ownership
Certification Award	Included with Access Code	Required Add-on Fee

Expert Review

Andrew Derek

Lead Course Analyst, CoursesWyn

"After auditing the curriculum depth and verifying the live access protocol, API Crash Course: How to Create, Test, & Document your APIs stands as an essential career asset. For a verified cost of $0, the return-on-learning ratio far exceeds commercial alternatives."

✅ Strategic Advantages

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Official Certificate: Credential generated at no cost.
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Mobile Friendly: Full access via smart TV & mobile.
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Expert Pacing: Modular design for professional schedules.

❌ Considerations

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Technical Depth: Requires focused 10+ hours study.
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Tool Prep: Certain labs require proprietary software setups.

Verification Outcome: Exceptional Academic Value

Course Rating

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Frequently Asked Questions

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Andrew Derek

Expert Reviewer

Andrew Derek is a lead editor and course analyst at CoursesWyn with over 8 years of experience in online education and digital marketing. He meticulously audits every Udemy coupon and course syllabus to ensure students get the highest quality learning materials at the best possible price.

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