API Fundamentals: Create, Test, and Document Web Services

In today’s digital landscape, APIs are the invisible threads that connect every mobile app, website, and cloud service. Understanding how these interfaces work is no longer just for specialized developers; it is a core skill for anyone involved in modern technology. This course transforms you from a curious beginner into a confident practitioner who understands the full lifecycle of an API. You will learn how to bridge the gap between different software systems by building interfaces that are reliable, secure, and easy for others to use through written explanations and practical exercises. What you'll learn: - Understand the fundamental role of APIs in modern software architecture - Learn the core principles of RESTful design and common HTTP methods - Practice designing clear and efficient API endpoints for real-world scenarios - Apply testing techniques to ensure data integrity and system reliability - Create professional documentation using industry-standard OpenAPI formats - Explore essential security practices including authentication and authorization The course begins with foundational definitions and the conceptual logic of data exchange. You will then progress through the practical stages of API development, focusing on structured design, systematic testing, and clear technical writing to ensure your interfaces are accessible to other developers. This course is designed for absolute beginners who want to understand the backend of the web. No prior programming or technical experience is required to begin. Start building the connections that power the modern web today.