Which of the following is not part of the Visualization Server?

The Visualization Server Pool Assigner is not a component of the Visualization Server. The role of the Visualization Server is to facilitate the rendering of 3D models and other visual data, providing users with tools to view and interact with these assets.

The Visualization Data Server is integral as it is responsible for managing and serving the visual data required for rendering. Property Renderers are essential because they convert model properties into visual formats that can be understood by the end-user. The Model Viewer is a critical component that allows users to view the 3D models in a graphical interface.

In contrast, the Visualization Server Pool Assigner is involved in managing multiple server resources rather than being a functional part of the server's core visualization capabilities. Therefore, identifying it as not part of the Visualization Server is correct.