| File Name: | OpenAPI (Swagger): Designing & Documenting Rest APIs |
| Content Source: | https://www.udemy.com/course/openapi-swagger-designing-documenting-rest-apis/ |
| Genre / Category: | Programming |
| File Size : | 1.1 GB |
| Publisher: | udemy |
| Updated and Published: | January 14, 2026 |
In modern software development, APIs are the connecting link between systems. However, an API is only as good as its documentation. This is where the OpenAPI Specification (OAS) comes into play. This course is a comprehensive guide to professionally planning, structuring, and preparing REST APIs in a way that is understandable to others. We start with the absolute basics of REST and HTTP and work our way up to the complex definition of schemas and the use of powerful tools such as Swagger UI and the OpenAPI Generator.
It doesn’t matter whether you follow the Design-First approach and write the specification first or want to document existing code. In this course, you will learn the necessary knowledge for both approaches.
What you will learn:
- Fundamentals: Understanding HTTP methods, HTTP status codes, and data formats (JSON/YAML)
- Structure: Mastering the OpenAPI schema (Paths, Parameters, Components, Security, etc.)
- Best Practices: Knowing the difference between Design-First and Code-First and applying both approaches
- Tooling: Using Swagger Editor, Swagger UI, and ReDoc for interactive documentation
- Automation: Generating code from specifications using the OpenAPI Generator
Who is this course suitable for:
- Backend developers who want to cleanly document and standardize their APIs
- Frontend developers who want to better understand how to read and use API definitions
- Software architects who want to establish modern API standards in their projects
- Product Owners & Technical Writers who form an interface between technology and business
Prerequisites:
- No prior experience with OpenAPI/Swagger required: We start from zero!
- Basic understanding of web development: You should know how client and server communicate with each other
- No specific programming knowledge required: The course focuses on the specification (YAML/JSON), not on a specific programming language
Course content overview:
- Introduction: What is OpenAPI and why do we need it?
- REST basics: Overview of URLs, HTTP methods, status codes, and data transfer
- The specification: Step-by-step structure of an API document (Info, Server, Paths, Components, etc.)
- Professional tools: Live use of Swagger UI, ReDoc, and code generators
- Tips & tricks: Avoiding common mistakes and best practices for clean API design
Legal Notice (Legal Disclaimer) This course is an independent training. It was not created by the OpenAPI Initiative, is not sponsored by it, and has no direct business relationship with the OpenAPI Initiative or the owners of the Swagger trademarks. All mentioned brand names are used solely for the purpose of describing the tools and standards covered in the course content.
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