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1 | 1 | ---
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2 | 2 | title: Device infrastructure and connectivity
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3 |
| -titleSuffix: Azure IoT |
4 | 3 | description: An overview of device infrastructure and connectivity in an Azure IoT solution, including gateways and protocols such as MQTT and OPC-UA.
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5 |
| -ms.service: iot-fundamentals |
6 |
| -services: iot-fundamentals |
| 4 | +ms.service: iot |
| 5 | +services: iot |
7 | 6 | author: dominicbetts
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8 | 7 | ms.author: dobett
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9 | 8 | ms.topic: overview
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@@ -51,7 +50,7 @@ A device can establish a secure connection to an IoT hub:
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51 | 50 | - Directly, in which case you must provide the device with a connection string that includes the hostname.
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52 | 51 | - Indirectly by using DPS, in which case the device connects to a well-known DPS endpoint to retrieve the connection string for the IoT hub it's assigned to.
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53 | 52 |
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54 |
| -The advantage of using DPS is that you don't need to configure all of your devices with connection-strings that are specific to your IoT hub. Instead, you configure your devices to connect to a well-known, common DPS endpoint where they discover their connection details. To learn more, see [Device Provisioning Service](/iot-dps/about-iot-dps.md). |
| 53 | +The advantage of using DPS is that you don't need to configure all of your devices with connection-strings that are specific to your IoT hub. Instead, you configure your devices to connect to a well-known, common DPS endpoint where they discover their connection details. To learn more, see [Device Provisioning Service](../iot-dps/about-iot-dps.md). |
55 | 54 |
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56 | 55 | ## Device connection strings
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57 | 56 |
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@@ -118,7 +117,7 @@ Field gateways (sometimes referred to as edge gateways) are typically deployed o
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118 | 117 | - Filter, compress, or aggregate telemetry before it's sent to the cloud.
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119 | 118 | - Run logic at the edge to remove the latency associated with running logic on behalf of devices in the cloud. For example, detecting a spike in temperature and opening a valve in response.
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120 | 119 |
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121 |
| -You can use Azure IoT Edge to deploy a field gateway to your on-premises environment. IoT Edge provides a set of features that enable you to deploy and manage field gateways at scale. IoT Edge also provides a set of modules that you can use to implement common gateway scenarios. To learn more, see [What is Azure IoT Edge?](../iot-edge/iot-edge-what-is-azure-iot-edge.md) |
| 120 | +You can use Azure IoT Edge to deploy a field gateway to your on-premises environment. IoT Edge provides a set of features that enable you to deploy and manage field gateways at scale. IoT Edge also provides a set of modules that you can use to implement common gateway scenarios. To learn more, see [What is Azure IoT Edge?](../iot-edge/about-iot-edge.md) |
122 | 121 |
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123 | 122 | An IoT Edge device can maintain a [persistent connection](#persistent-connections) to an IoT hub. The gateway forwards device telemetry to IoT Central. This option enables command and control of the downstream devices connected to the IoT Edge device.
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124 | 123 |
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