https://www.manageengine.com/products/ad-manager/ad-user-attributes/objectclass.html
Manage and view objectClass attribute value using ADManager Plus
Manage Active Directory attribute objectClass while creating and modifying users using templates or CSV file and view it using pre-defined reports without...
attribute valuemanageviewobjectclassusing
https://www.openldap.org/lists/openldap-technical/201001/msg00040.html
Re: Standard objectClass for representing web services
standardobjectclassrepresentingwebservices