The following article deals with account lockout policies as you may find in (but not limited to) Windows domains. The issues discussed apply to all Windows domains whose authentication relies on passwords alone (as opposed to multifactor authentication).
Active Directory (AD) is a Microsoft brand for identity-related capabilities. In the on-premises world, Windows Server AD provides a set of identity capabilities and services, and is hugely popular (88% of Fortune 1000 and 95% of enterprises use AD). This topic includes all things Active Directory including DNS, Group Policy, DFS, troubleshooting, ADFS, and all other topics under the Microsoft AD and identity umbrella.