# Oracle Endeca Workbench deployed in a preview environment

This deployment approach calls for an environment outside of production to be deployed for Oracle Endeca Workbench.

This environment requires a standalone Deployment Template installation, which runs its own baseline and partial index updates. In the separate production environment, configuration files are retrieved from Oracle Endeca Workbench and promoted to the production cluster during updates.

By default, Oracle Endeca Workbench uses an EAC script to update MDEX Engines with new configuration each time the Save Changes button is pressed. The default implementation of this script applies configuration to each Dgraph provisioned in the EAC for the application with which the Workbench application is associated. With this deployment approach, this functionality is appropriate as the application deployed in the preview environment is dedicated to preview and any Dgraphs associated with the deployment can be updated by the Workbench.

Related concepts
Oracle Endeca Workbench deployed with a preview Dgraph
Related tasks
Configuring an Oracle Endeca Workbench deployment in a preview environment