---
title: "Site collections"
slug: "site-collections-1188169"
abstract: "Use site collections to run multiple sites on a single instance of Sitecore."
---
# Site collections

The SXA content architecture includes site collections and sites. SXA supports multiple site collections, which means that you can run multiple sites on a single instance of Sitecore. Each site collection can include multiple related sites, for example, to support multiple brands for a single company or multiple languages or locations for a single brand.

Learn more about site collections with these topics:

- [Create a headless site collection and site](https://doc.sitecore.com/xp/en/developers/sxa/105/sitecore-experience-accelerator/create-a-headless-site-collection-and-site.html "Create a headless site collection and site")
- [Grouping of headless site collections and sites](https://doc.sitecore.com/xp/en/developers/sxa/105/sitecore-experience-accelerator/grouping-of-headless-site-collections-and-sites.html "Grouping of headless site collections and sites")
- [Share content between headless sites](https://doc.sitecore.com/xp/en/developers/sxa/105/sitecore-experience-accelerator/share-content-between-headless-sites.html "Share content between headless sites")
- [Add and extend an SXA template](https://doc.sitecore.com/xp/en/developers/sxa/105/sitecore-experience-accelerator/add-and-extend-an-sxa-template.html "Add and extend an SXA template")
- [Add a module to an existing site collection or site](https://doc.sitecore.com/xp/en/developers/sxa/105/sitecore-experience-accelerator/add-a-module-to-an-existing-site-collection-or-site-1188174.html "Add a module to an existing site collection or site")
- [Remove a site collection or a site](https://doc.sitecore.com/xp/en/developers/sxa/105/sitecore-experience-accelerator/remove-a-site-collection-or-a-site-1188175.html "Remove a site collection or a site")