Log into your dedicated or cloud server as administrator.

Click on: Start

Click on: Server Manager

Under: Server Manager

Click on: Dashboard(Top Right)

Click on: Add roles and features (Middle Pane)

Click on: Next (Default)

Click on: Role based or feature-based installation (Default)

Click on: Select a server from the server pool(Default)

Click on: Next

Fill in: Active Directory Domain Services (Check)

Under: Add Roles and Features Wizard

Click on: Add Features (Default)

Click on: Next

Click on: Next (Default)

Click on: Next (Default)

Click on: Install

Click on: Close