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

# Optimizely CMS 13

Learn how Optimizely Graph integrates with CMS 13.

Optimizely Graph is mandatory for CMS 13 and powers search and content retrieval for the CMS. Configure your CMS 13 instance to communicate with the Graph service so editors and end users can query published content through GraphQL. Unlike CMS 12, CMS 13 ships the Graph integration in the platform, so no separate sync package is required.

This section covers the following topics:

* <Anchor label="Provision an Optimizely Graph instance" target="_blank" href="doc:provision-an-optimizely-graph-instance-for-cms-13">Provision an Optimizely Graph instance</Anchor>
* <Anchor label="Use the C# SDK for CMS 13" target="_blank" href="https://docs.developers.optimizely.com/content-management-system/v13.0.0-CMS/docs/overview-of-c-sharp-sdk">Use the C# SDK for CMS 13</Anchor>

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