Introduction to APIs and REST

Welcome to the Postman App's User Manual!

Disclaimer: This user manual is an unofficial guide to the Postman app and is not affiliated with the official Postman documentation.

This section provides an overview of APIs (Application Programming Interfaces) and REST (Representational State Transfer) to help you understand the fundamentals before diving into Postman.

What are APIs?

An API allows different software applications to communicate and share data with each other. It defines a set of rules for how software components should interact, making it easier for developers to integrate different services.

Understanding REST

REST is a set of architectural principles for designing networked applications. It uses a stateless communication model, meaning each request from a client contains all the information needed to understand and process the request. RESTful APIs are widely used for web services due to their simplicity and scalability.

Why Use Postman?

Postman simplifies the process of working with APIs. Whether you're a developer, tester, or documentation writer, Postman provides a user-friendly interface to create, test, and document APIs. It supports various HTTP methods and formats, making it a versatile tool for API development.

In this user manual, you'll explore the essential features of Postman, starting with system requirements and installation, and progressing to advanced features and troubleshooting. Let's get started!