> ## Documentation Index
> Fetch the complete documentation index at: https://docs.conductor.is/llms.txt
> Use this file to discover all available pages before exploring further.

# Terminology

> The key concepts you should know to use Conductor.

Familiarize yourself with the terms below that we use throughout the documentation and APIs.

| Term                                          | Definition                                                                                                                                                                                                    |
| --------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [end-user](/api-ref/end-users/object)         | A user of *your* application for whom you will connect integrations through Conductor. Each end-user can represent an individual or an entire company/organization of multiple users within your application. |
| Integration                                   | A third-party service you want to connect to your application. For example, QuickBooks Desktop.                                                                                                               |
| [Auth session](/api-ref/auth-sessions/object) | An authentication session with a secure link to share with your end-user to connect their QuickBooks Desktop instance to your Conductor account.                                                              |
| [Authentication flow](/usage/auth-flow)       | The UI walkthrough that guides your users through securely connecting their QuickBooks Desktop to your Conductor account.                                                                                     |