## Class libraries and other APIs
Class libraries are hosted on Optimizely World. APIs are hosted here.
Optimizely Content Management System (CMS) and Optimizely Customized Commerce
[Optimizely Content Management System .NET API and libraries](🔗)
[Optimizely Customized Commerce .NET API and libraries](🔗)
[Content Delivery REST API reference (including Commerce Storefront REST API)](🔗)
[Content Definitions REST API reference](🔗)
[Content Management REST API reference](🔗)
[Service API developer reference (Commerce Integration REST API)](🔗)
Optimizely Configured Commerce
[Optimizely Configured Commerce Storefront REST API](🔗)
Optimizely Content Marketing Platform (CMP)
[Optimizely Content Marketing Platform Open Rest API](🔗)
Optimizely Data Platform (ODP)
[Optimizely Data Platform REST API](🔗)
[Optimizely Data Event API](🔗)
Optimizely Digital Experience Platform (DXP)
[Optimizely DXP Episerver Cloud REST API](🔗)
Optimizely Experimentation
[Optimizely Feature Experimentation Flags API](🔗)
[Optimizely Feature Experimentation Agent API](🔗)
[Optimizely Web Experimentation](🔗)
[Optimizely Performance Edge Decider](🔗)
[Optimizely Performance Edge JavaScript API](🔗)
Optimizely Search & Navigation
[Optimizely Search & Navigation API](🔗)
Optimizely Campaign
[Optimizely Campaign REST API](🔗)
[Optimizely Campaign developer guide with REST, HTTP, SOAP, and SMPT APIs](🔗)