Azure marketplaceからもご確認いただけますが、作成側はZoom社です。
Use Azure AD to manage user access and enable single sign-on with Zoom. Requires an existing Zoom subscription.
* Enterprise Single Sign-On - Azure Active Directory supports rich enterprise-class single sign-on with Zoom out of the box. Users sign in using their organizational accounts hosted in Active Directory.
* Easy Configuration - Azure Active Directory provides a simple step-by-step user interface for connecting Zoom to Azure AD.
Azure Active Directory for Zoom （外部サイト Microsoft Azure）