# Platform stack

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XROH abstracts all external liquidity sources behind internal route engines (X1/X2/X3).

Public docs never name third‑party providers or expose their endpoints.
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This section is about implementation. Use it to understand the codebase and production runtime.

### Start here

* [Platform overview](https://docs.xroh.io/platform/platform-stack/platform-overview)
* [Backend](https://docs.xroh.io/platform/platform-stack/backend)
* [Operations](https://docs.xroh.io/platform/platform-stack/operations)
