Kentico CMS allows you to manage multiple sites in a single installation. The database contains data for all web sites and the web sites are managed using a single administration interface (single copy of code). The following figure shows the multi-site configuration where one database and one copy of CMS code are used for multiple web sites.

When you use multi-site configuration, you can share:
| • | documents |
| • | users |
| • | global settings and system tables |
| • | document types |
| • | page templates |
| • | web parts |
This feature is useful if you need to create multiple web sites for a single company and share users/documents/settings between them.
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When to choose separate installations
There are situations in which we recommend running separate instances of Kentico CMS for every web site:
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Page url: http://devnet.kentico.com/docs/devguide/index.html?site_management_overview.htm