Address feedback

Author: dominicbetts

articles/iot-central/core/concepts-device-templates.md

@@ -61,8 +61,7 @@ Use the following DPS payload to assign the device to a device template:
 }
 ```
 
-To lean more about the DPS payload, see the sample code used in the [Tutorial: Create and connect a client application to your Azure IoT Central application](tutorial-connect-device.md).
- 
+To learn more about the DPS payload, see the sample code used in the [Tutorial: Create and connect a client application to your Azure IoT Central application](tutorial-connect-device.md).
 
 ## Device models
 

articles/iot/iot-overview-connectivity.md

@@ -19,6 +19,8 @@ This overview introduces the key concepts around how devices connect to the clou
 
 IoT Central applications use the IoT Hub and the Device Provisioning Service (DPS) services internally. Therefore, the concepts in this article apply whether you're using IoT Central to explore an IoT scenario or building your solution by using IoT Hub and DPS.
 
+The following diagram shows a high-level view of the components in a typical IoT solution. This article is focused on the connectivity between the devices and the IoT cloud services shown in the diagram.
+
 :::image type="content" source="media/iot-overview-connectivity/iot-architecture.svg" alt-text="High-level IoT solution architecture diagram that highlights device connectivity areas" border="false":::
 
 ## Primitives

articles/iot/iot-overview-device-development.md

@@ -19,6 +19,8 @@ This overview introduces the key concepts around developing devices that connect
 
 IoT Central applications use the IoT Hub and the Device Provisioning Service (DPS) services internally. Therefore, the concepts in this article apply whether you're using IoT Central to explore an IoT scenario or building your solution by using IoT Hub and DPS.
 
+The following diagram shows a high-level view of the components in a typical IoT solution. This article is focused on the devices and gateway shown in the diagram.
+
 :::image type="content" source="media/iot-overview-device-development/iot-architecture.svg" alt-text="High-level IoT solution architecture diagram that highlights device connectivity areas" border="false":::
 
 In Azure IoT, a device developer writes the code to run on the devices in the solution. This code typically:

articles/iot/iot-overview-device-management.md

@@ -19,6 +19,8 @@ This overview introduces the key concepts around managing and controlling device
 
 IoT Central applications use the IoT Hub and the Device Provisioning Service (DPS) services internally. Therefore, the concepts in this article apply whether you're using IoT Central to explore an IoT scenario or building your solution by using IoT Hub and DPS.
 
+The following diagram shows a high-level view of the components in a typical IoT solution. This article is focused on the device management and control components of an IoT solution.
+
 :::image type="content" source="media/iot-overview-device-management/iot-architecture.svg" alt-text="High-level IoT solution architecture diagram that highlights device connectivity areas" border="false":::
 
 In Azure IoT, device management refers to processes such as provisioning and updating devices. Device management includes the following tasks:
@@ -58,7 +60,7 @@ Before a device can connect to an IoT hub, it must be registered. Device registr
 
 If you think a device has been compromised or isn't functioning correctly, you can disable it in the device registry to prevent it from connecting to the cloud. To allow a device to connect back to a cloud after the issue is resolved, you can re-enable it in the device registry. You can also permanently remove a device from the device registry to completely prevent it from connecting to the cloud.
 
-To lean more, see [Understand the identity registry in your IoT hub](../iot-hub/iot-hub-devguide-identity-registry.md).
+To learn more, see [Understand the identity registry in your IoT hub](../iot-hub/iot-hub-devguide-identity-registry.md).
 
 IoT Central provides a UI to manage the device registry in the underlying IoT hub. To learn more, see [Add a device (IoT Central)](../iot-central/core/howto-manage-devices-individually.md#add-a-device).