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

# Sources

> Existing systems connected to Galaxy

## **What is a Source?**

A **Source** is a system where your organization’s context lives today: databases, warehouses, documents, and people.

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  <img src="https://mintcdn.com/galaxy-d7fe996b/OGy7gxcnlv108Leg/images/sources-zoom-in.png?fit=max&auto=format&n=OGy7gxcnlv108Leg&q=85&s=50a84493d62b85bf623456039d0c424f" alt="Sources Zoom In" width="2880" height="2048" data-path="images/sources-zoom-in.png" />
</Frame>

Galaxy reads from a Source and uses its structure as an input to build a Project. You must connect a Source to create a project.