---
title: "Master Marketing Definitions index"
slug: "master-marketing-definitions-index"
abstract: "Overview of Sitecore Master Marketing Definitions index supported infrastructure, references, and privacy and security."
---
# Master Marketing Definitions index

The Master Marketing Definitions index contains definitions such as goals, outcomes, and campaigns and is created from the [Master database](https://doc.sitecore.com/xp/en/developers/91/platform-administration-and-architecture/master-database.html "Master database").

## Supported infrastructure

You can host the Master Marketing Definitions on:

- Solr
- Azure Search
- Lucene (developer environments only)

Refer to the [Sitecore compatibility table](https://kb.sitecore.net/articles/087164) for compatible versions.

## Reference structure

The Master Marketing Definitions index has its place in the Sitecore reference structure. It can be referenced by other roles, and it can also reference other roles.

![Illustration showing the Master Marketing Definitions index's place in the Sitecore reference structure.](https://doc.sitecore.com/api/markdown-image/xp/en/developers/91/platform-administration-and-architecture/images/master-marketing-definitions-index.png)

### Referenced by

The Master Marketing Definitions index is referenced by the following roles:

- [Content Management](https://doc.sitecore.com/xp/en/developers/91/platform-administration-and-architecture/content-management--cm-.html "Content Management (CM)")
- [EXM Dispatch](https://doc.sitecore.com/xp/en/developers/91/platform-administration-and-architecture/exm-dispatch.html "EXM Dispatch")

### References

The Master Marketing Definitions index does not reference other roles.

## Privacy and security

Assuming default behavior, the Master Marketing Definitions index does not store personal data.