Configuring the Creo View Adapter for STEP > Server Controlled Publishing for STEP
  
Server Controlled Publishing for STEP
When the Visualization server initiates a request to convert STEP data to the Creo View format, the server uses the stepworker to convert the file in the background. This Visualization server could be a Windchill server or another customized server environment.
The STEP worker is an important link in achieving the full functionality of the Visualization server. For more information, refer to Visualization Server Definition.