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Technology

Postman

Difficulty

Beginner

Experience

Fresher

Type

Technical

AutomateQA Team

QA Automation Engineers

June 19, 2026

Interview Question

What are Collections in Postman and what is their purpose?

Q: What are Collections in Postman and what is their purpose?

Postman Collections A Collection in Postman is a group of saved API requests organized into folders. Think of it as a project folder for your API tests. Purpose of Collections 1. Organization Group related API requests logically: 📁 User API Collection 📁 Auth → POST /login → POST /logout 📁 Users → GET /users → POST /users → GET /users/{id} → PUT /users/{id} → DELETE /users/{id} 2. Collaboration - Export and share collections as JSON files - Publish collections to your Postman workspace for team access - Version-control collections in Git 3. Automated Testing with Collection Runner Run all re

Answer

Postman Collections

A Collection in Postman is a group of saved API requests organized into folders. Think of it as a project folder for your API tests.

Purpose of Collections

1. Organization

Group related API requests logically:

CODE

📁 User API Collection
  📁 Auth
    → POST /login
    → POST /logout
  📁 Users
    → GET /users
    → POST /users
    → GET /users/{id}
    → PUT /users/{id}
    → DELETE /users/{id}

2. Collaboration

✓Export and share collections as JSON files
✓Publish collections to your Postman workspace for team access
✓Version-control collections in Git

3. Automated Testing with Collection Runner

Run all requests in a collection in sequence:

✓Set number of iterations
✓Use CSV/JSON data files for data-driven testing
✓View pass/fail results for each test

4. Newman Integration (CI/CD)

Run collections from the command line:

Bash

newman run my-collection.json -e production.json --reporters cli,html

5. Documentation

Postman auto-generates API documentation from your collection with descriptions, examples, and response samples.

Creating a Collection

✓Click Collections in the sidebar
✓Click + or New Collection
✓Name it (e.g., "User API Tests")
✓Add requests by clicking the ... menu → Add Request
✓Save each request to the collection

Collection Variables

Collections can have their own variables:

CODE

{{base_url}} = https://api.example.com
{{api_version}} = v1

▸Use in requests: {{base_url}}/{{api_version}}/users