Address PR feedback

Author: dominicbetts

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

@@ -78,7 +78,7 @@ A typical IoT device is made up of:
 - Custom parts, which are the things that make your device unique.
 - Standard parts, which are things that are common to all devices.
 
-These parts are called _interfaces_ in a device model. Interfaces define the details of each part your device implements. Interfaces are reusable across device models. In DTDL, a component refers to another interface, which may defined in a separate DTDL file or in a separate section of the file.
+These parts are called _interfaces_ in a device model. Interfaces define the details of each part your device implements. Interfaces are reusable across device models. In DTDL, a component refers to another interface, which may be defined in a separate DTDL file or in a separate section of the file.
 
 The following example shows the outline of device model for a [temperature controller device](https://github.com/Azure/iot-plugandplay-models/blob/main/dtmi/com/example/temperaturecontroller-2.json). The root component includes definitions for `workingSet`, `serialNumber`, and `reboot`. The device model also includes two `thermostat` components and a `deviceInformation` component. The contents of the three components have been removed for the sake of brevity:
 

articles/iot/iot-introduction.md

@@ -17,7 +17,7 @@ The Azure Internet of Things (IoT) is a collection of Microsoft-managed cloud se
 
 The following diagram shows a high-level view of the components in a typical IoT solution. This article focuses on the key groups of components: devices, IoT cloud services, other cloud services, and solution-wide concerns. Other articles in this section provide more detail on each of these components.
 
-:::image type="content" source="media/iot-introduction/iot-architecture.svg" lightbox="media/iot-introduction/iot-architecture.svg" alt-text="High-level IoT solution architecture diagram" border="false":::
+:::image type="content" source="media/iot-introduction/iot-architecture.svg" lightbox="media/iot-introduction/iot-architecture.svg" alt-text="Diagram that shows the high-level IoT solution architecture." border="false":::
 
 ## IoT devices
 

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

@@ -20,7 +20,7 @@ IoT Central applications use the IoT Hub and the Device Provisioning Service (DP
 
 The following diagram shows a high-level view of the components in a typical IoT solution. This article focuses on the connectivity between the devices and the IoT cloud services, including gateways and bridges, shown in the diagram.
 
-:::image type="content" source="media/iot-overview-device-connectivity/iot-architecture.svg" lightbox="media/iot-overview-device-connectivity/iot-architecture.svg" alt-text="High-level IoT solution architecture diagram that highlights device connectivity areas" border="false":::
+:::image type="content" source="media/iot-overview-device-connectivity/iot-architecture.svg" lightbox="media/iot-overview-device-connectivity/iot-architecture.svg" alt-text="Diagram that shows the high-level IoT solution architecture highlighting device connectivity areas." border="false":::
 
 ## Primitives
 

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

@@ -18,7 +18,7 @@ This overview introduces the key concepts around developing devices that connect
 
 The following diagram shows a high-level view of the components in a typical IoT solution. This article focuses on the devices and gateway shown in the diagram.
 
-:::image type="content" source="media/iot-overview-device-development/iot-architecture.svg" lightbox="media/iot-overview-device-development/iot-architecture.svg" alt-text="High-level IoT solution architecture diagram that highlights device connectivity areas" border="false":::
+:::image type="content" source="media/iot-overview-device-development/iot-architecture.svg" lightbox="media/iot-overview-device-development/iot-architecture.svg" alt-text="Diagram that shows the high-level IoT solution architecture highlighting 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

@@ -20,7 +20,7 @@ IoT Central applications use the IoT Hub and the Device Provisioning Service (DP
 
 The following diagram shows a high-level view of the components in a typical IoT solution. This article focuses on the device management and control components of an IoT solution.
 
-:::image type="content" source="media/iot-overview-device-management/iot-architecture.svg" lightbox="media/iot-overview-device-management/iot-architecture.svg" alt-text="High-level IoT solution architecture diagram that highlights device connectivity areas" border="false":::
+:::image type="content" source="media/iot-overview-device-management/iot-architecture.svg" lightbox="media/iot-overview-device-management/iot-architecture.svg" alt-text="Diagram that shows the high-level IoT solution architecture highlighting 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: