1. VMware vSphere Documentation
"Add an Active Directory over LDAP Identity Source in vCenter Server": This document provides the step-by-step procedure for the required configuration. It states
"You can add an Active Directory over LDAP identity source to the vCenter Single Sign-On domain. Users and groups in the Active Directory are then available in vCenter Server."
Source: VMware vSphere 8.0 Documentation
vCenter Server and Host Management
Chapter: vCenter Server Identity Provider Configuration.
2. VMware vSphere Documentation
"vCenter Server Identity Provider Concepts": This document distinguishes between direct identity sources and federation. It clarifies that Active Directory over LDAP is a direct identity source
while options like Active Directory Federation Services (ADFS) use federation protocols (SAML/OIDC). The question's constraints align with using a direct identity source.
Source: VMware vSphere 8.0 Documentation
vCenter Server and Host Management
Chapter: vCenter Server Identity Provider Configuration.
3. VMware vSphere Documentation
"Configuring vCenter Server to use Active Directory Federation Services (ADFS)": This official guide details the process for setting up federation
which involves protocols like SAML and OIDC. The question explicitly rules out this approach
making options B and C incorrect.
Source: VMware vSphere 8.0 Documentation
vCenter Server and Host Management
Chapter: vCenter Server Identity Provider Configuration.