If you are an authorized device manufacturer, you access the ISO and deployment tools via the Microsoft Partner Center or the OEM Download Center. This requires an active Microsoft IoT OEM Agreement.
You cannot simply buy a retail copy of Windows Server IoT 2019 and install it on a standard Dell PowerEdge server for your office. That violates the license terms. It is designed to be distributed by device manufacturers (OEMs) as part of a dedicated solution. Windows Server Iot 2019 Iso Download
If you are a developer, system integrator, or IT pro looking to test the OS before deploying, Microsoft offers a for Windows Server IoT 2019. If you are an authorized device manufacturer, you
: It is generally available only to Original Equipment Manufacturers (OEMs) through an OEM Agreement. Windows Server Iot 2019 Iso Download