This video demonstrates how to enable Windows integrated authentication on Amazon RDS for SQL Server using AWS Managed Active Directory. The presenter, Andre Faria, walks through setting up a forest trust between AWS Managed AD and an on-premises Active Directory environment. This allows on-premises users to authenticate to RDS SQL Server instances connected to AWS Managed AD. Key steps covered include creating an RDS SQL Server instance, configuring DNS conditional forwarders, establishing a one-way forest trust, and creating Windows authentication logins in SQL Server. The demo concludes by successfully connecting to the RDS instance using Windows authentication from an on-premises domain user account.