Merge pull request #285065 from dominicbetts/aio-sites-updates

AIO: Update Sites information

Author: prmerger-automator[bot]

articles/iot-operations/deploy-iot-ops/howto-prepare-cluster.md

@@ -325,7 +325,7 @@ pod/metrics-agent-6588f97dc-455j8                 2/2     Running   0
 
 ## Create sites
 
-To manage which clusters your OT users have access to, you can group your clusters into sites. To learn more, see [What is Azure Arc site manager (preview)?](../../azure-arc/site-manager/overview.md).
+A _site_ is a collection of Azure IoT Operations instances. Sites typically group instances by physical location and make it easier for OT users to locate and manage assets. An IT administrator creates sites and assigns Azure IoT Operations instances to them. To learn more, see [What is Azure Arc site manager (preview)?](../../azure-arc/site-manager/overview.md).
 
 ## Next steps
 

articles/iot-operations/discover-manage-assets/howto-manage-assets-remotely.md

@@ -22,7 +22,7 @@ _OPC UA servers_ are software applications that communicate with assets. OPC UA
 
 An _asset endpoint_ is a custom resource in your Kubernetes cluster that connects OPC UA servers to connector for OPC UA modules. This connection enables a connector for OPC UA to access an asset's data points. Without an asset endpoint, data can't flow from an OPC UA server to the connector for OPC UA and MQTT broker. After you configure the custom resources in your cluster, a connection is established to the downstream OPC UA server and the server forwards telemetry to the connector for OPC UA.
 
-A _site_ is a collection of Azure IoT Operations instances. Sites help you organize your instances and manage access control. Your IT administrator creates sites, assigns instances to them, and grants access to OT users in your organization.
+A _site_ is a collection of Azure IoT Operations instances. Sites typically group instances by physical location and make it easier for OT users to locate and manage assets. Your IT administrator creates sites and assigns Azure IoT Operations instances to them. To learn more, see [What is Azure Arc site manager (preview)?](../../azure-arc/site-manager/overview.md).
 
 In the operations experience web UI, an _instance_ represents an Azure IoT Operations cluster. An instance can have one or more asset endpoints.
 
@@ -45,7 +45,7 @@ To sign in to the operations experience, go to the [operations experience](https
 
 ## Select your site
 
-After you sign in, the web UI displays a list of sites that you have access to. Each site is a collection of Azure IoT Operations instances where you can configure your assets. Your [IT administrator is responsible for organizing instances in to sites](../../azure-arc/site-manager/overview.md) and granting access to OT users in your organization. Instances that aren't part of a site appear in the **Unassigned instances** node. Select the site that you want to use:
+After you sign in, the web UI displays a list of sites. Each site is a collection of Azure IoT Operations instances where you can configure and manage your assets. A site typically represents a physical location where a you have physcial assets deployed. Sites make it easier for you to locate and manage assets. Your [IT administrator is responsible for grouping instances in to sites](../../azure-arc/site-manager/overview.md). Any Azure IoT Operations instances that aren't assigned to a site appear in the **Unassigned instances** node. Select the site that you want to use:
 
 :::image type="content" source="media/howto-manage-assets-remotely/site-list.png" alt-text="Screenshot that shows a list of sites in the operations experience.":::
 

articles/iot-operations/get-started-end-to-end-sample/quickstart-add-assets.md

@@ -46,7 +46,7 @@ Browse to the [operations experience](https://iotoperations.azure.com) in your b
 
 ## Select your site
 
-After you sign in, the portal displays a list of sites that you have access to. Each site is a collection of Azure IoT Operations instances where you can configure your assets. Your [IT administrator is responsible for organizing instances in to sites](../../azure-arc/site-manager/overview.md) and granting access to OT users in your organization. Because you're working with a new deployment, there are no sites yet. You can find the cluster you created in the previous quickstart by selecting **Unassigned instances**. In the portal, an instance represents a cluster where you deployed Azure IoT Operations.
+A _site_ is a collection of Azure IoT Operations instances. Sites typically group instances by physical location and make it easier for OT users to locate and manage assets. Your IT administrator creates [sites and assigns Azure IoT Operations instances to them](../../azure-arc/site-manager/overview.md). Because you're working with a new deployment, there are no sites yet. You can find the cluster you created in the previous quickstart by selecting **Unassigned instances**. In the operations experience, an instance represents a cluster where you deployed Azure IoT Operations.
 
 ## Select your instance
 
@@ -55,7 +55,7 @@ Select the instance where you deployed Azure IoT Operations in the previous quic
 :::image type="content" source="media/quickstart-add-assets/cluster-list.png" alt-text="Screenshot of Azure IoT Operations instance list.":::
 
 > [!TIP]
-> If you don't see any instances, you might not be in the right Microsoft Entra ID tenant. You can change the tenant from the top right menu in the portal.
+> If you don't see any instances, you might not be in the right Microsoft Entra ID tenant. You can change the tenant from the top right menu in the operations experience.
 
 ## Add an asset endpoint
 

articles/iot-operations/overview-iot-operations.md

@@ -35,7 +35,7 @@ There are two core elements in the Azure IoT Operations Preview architecture:
 * **Azure IoT Operations Preview**. The set of data services that run on Azure Arc-enabled edge Kubernetes clusters. It includes the following services:
   * The _MQTT broker_ is an edge-native MQTT broker that powers event-driven architectures.
   * The _connector for OPC UA_ handles the complexities of OPC UA communication with OPC UA servers and other leaf devices.
-* The _operations experience_ is a web UI that provides a unified experience for operational technologists to manage assets and data processor pipelines in an Azure IoT Operations deployment. An IT administrator can use Azure Arc sites to control the resources that an operational technologist can access in the portal.
+* The _operations experience_ is a web UI that provides a unified experience for operational technologists to manage assets and data processor pipelines in an Azure IoT Operations deployment. An IT administrator can use [Azure Arc site manager (preview)](../azure-arc/site-manager/overview.md) to group Azure IoT Operations instances by physical location and make it easier for OT users to find instances.
 
 ## Deploy