<p>The new configuration to associate with the specified group. A configuration associates the resource group with an Amazon Web Services service and specifies how the service can interact with the resources in the group. A configuration is an array of <a>GroupConfigurationItem</a> elements.</p> <p>For information about the syntax of a service configuration, see <a href="https://docs.aws.amazon.com/ARG/latest/APIReference/about-slg.html">Service configurations for Resource Groups</a>.</p> <note> <p>A resource group can contain either a <code>Configuration</code> or a <code>ResourceQuery</code>, but not both.</p> </note>