---
title: Class libraries and APIs
slug: cms-11/dev-docs/class-libraries-and-apis
docTags: 
createdAt: 2026-07-22T19:45:18.981Z
---

## Class libraries and other APIs

Class libraries are hosted on Optimizely World. APIs are hosted here.

- Optimizely Content Management System (CMS) and Optimizely Commerce Connect
  - [Optimizely Content Management System .NET API and libraries](https://world.optimizely.com/documentation/class-libraries/cms/)
  - [Optimizely Commerce Connect .NET API and libraries](https://world.optimizely.com/documentation/class-libraries/commerce/)
  - [Content Delivery REST API reference (including Commerce Storefront REST API)](docId\:rghyQT5Vrjbi7u6FegdaB)
  - [Content Definitions REST API reference](docId\:S_Rhl1bgvHo0H_YRyYpbK)
  - [Content Management REST API reference](docId:3ItobWYhOjuG0yb8nYv9q)
  - [Service API developer reference (Commerce Integration REST API)](https://docs.developers.optimizely.com/commerce/v1.3.0-service-api-developer-guide/reference/service-api-reference-guides)
- Optimizely Configured Commerce
  - [Optimizely Configured Commerce Storefront REST API](docId\:nkvDxM8G-xyZI-m3qNCIe)
- Optimizely Content Marketing Platform (CMP)
  - [Optimizely Content Marketing Platform Open Rest API](docId\:WMW6IuydLVedqnDH0qWg1)
- Optimizely Data Platform (ODP)
  - [Optimizely Data Platform REST API](docId\:AG2AAmfi-lqBG6sOp0eTu)
  - [Optimizely Data Event API](docId\:LHIwyTMwVE6kNISdESDTw)
- Optimizely Digital Experience Platform (DXP)
  - [Optimizely DXP Episerver Cloud REST API](https://docs.developers.optimizely.com/digital-experience-platform/reference/databaseexportapi_exportdatabase)
- Optimizely Experimentation
  - [Optimizely Feature Experimentation Flags API](https://docs.developers.optimizely.com/feature-experimentation/reference/list_environments)
  - [Optimizely Feature Experimentation Agent API](docId:70orYTjk-9148MF1hp0KK)
  - [Optimizely Web Experimentation](docId\:ZAZ5ZXCZZoX11jsGkDjEZ)
  - [Optimizely Performance Edge Decider](docId\:SJzeDGNv7eqhj81R59wi-)
  - [Optimizely Performance Edge JavaScript API](docId\:qI46yYC1ao-Ss6dnKrE4n)
- Optimizely Search & Navigation
  - [Optimizely Search & Navigation API](docId:1b8pOkQhpWRZH8puitwB1)
- Optimizely Campaign
  - [Optimizely Campaign REST API](docId\:PrlufMbDxoZeSjHdRm5Ua)
  - [Optimizely Campaign developer guide with REST, HTTP, SOAP, and SMPT APIs](docId\:CfC7JWcSTjCz4Ldo4GKQ7)