> For the complete documentation index, see [llms.txt](https://docs.quantumbyte.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.quantumbyte.ai/components/system-source-of-truth/domain-data-storage.md).

# Domain Data Storage

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Coming soon in v3.1.1
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The **Domain Data Storage** manages the structured data elements that define how an application operates. It stores entities, attributes, and relationships that form the logical foundation of the system. By keeping all data definitions synchronized with the active version of the application, this feature ensures that the backend logic remains aligned with what users see and configure in the Canvas and Data Editor.