Parts of OpenAPI 3.0 Specification
Info and Components are important parts of API Definition

  1. Info – Provides Name, Description and Developers information of API
  2. Servers – Provides server information and various environment URL of API
  3. Security – Provides details about how API is secured, API keys, Authorization information
  4. Paths – Details about API Endpoints
  5. Tags and extenaldocs – Tags that could be grouped for API operations
  6. Components – Set of reusable objects which could be used during API definition