---
title: "Legacy REST APIs"
slug: "legacy-rest-apis"
abstract: ""
---
# Legacy REST APIs

This section describes legacy Sitecore CDP REST APIs. We recommend that you upgrade to the newer version of these REST APIs:

- Guest and Guest data extension REST APIs - access [the most recent version](https://api-docs.sitecore.com/cdp/guest-rest-api) of these REST APIs. If you're already using the old version, [read about the differences between v2 and v2.1](https://doc.sitecore.com/cdp/en/developers/api/rest-apis/legacy-rest-apis/guest-rest-api-v2--legacy-/differences-between-v2-and-v2-1-of-the-guest-and-guest-data-extension-rest-apis.html "Differences between v2 and v2.1 of the Guest and Guest data extension REST APIs") so you can upgrade.
- Order, Order item, Order contact, Order consumer, Order data extension, and Order item data extension REST APIs - access [the most recent version](https://api-docs.sitecore.com/cdp/order-rest-api) of these REST APIs. If you're already using the old version, [read about the differences between v2 and v2.1](https://doc.sitecore.com/cdp/en/developers/api/rest-apis/legacy-rest-apis/order-rest-api-v2--legacy-/differences-between-v2-and-v2-1-of-the-order-rest-apis.html "Differences between v2 and v2.1 of the Order REST APIs") so you can upgrade.