Google Merchant Center is a tool used for promoting your different products through e.g. Google AdWords campaigns. In order to utilize the Google Merchant Center, setting up a Google Product Feed is necessary. After configuring the product feed correctly, it will definitely optimize the marketing impact on the customers.
The product feed is configured using the Feeds tool in Dynamicweb PIM, and this guide here explains how to create a Google Merchant product feed using this particular tool, so go ahead and follow the guide.