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Azure Internet of Things (IoT)

  • A service that allows you to connect, monitor, and control one or more IoT devices that can communicate with back-end services hosted in the cloud.

Azure IoT Hub

  • A PaaS solution that provides complete control over the collection and processing of IoT data.
  • To create a complete end-to-end solution, you can integrate the IoT Hub with other Azure services.
    • Azure Event Grid
    • Azure Logic Apps
    • Azure Machine Learning
    • Azure Stream Analytics 
  • Message routing integration automatically helps you respond to a device-reported state change.
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  • You can use IoT Hub scaling if you are approaching the message limit on your IoT Hub.

Azure IoT Central

  • A SaaS solution that provides a collection of industry-specific application templates.
  • You can create your own device template to define the characteristics and behavior of a device.
  • Configure custom dashboards to monitor your device’s health and telemetry.
  • Build custom rules when device telemetry crosses a specified threshold.
  • You can apply single or bulk updates by creating jobs.

Azure Sphere

  • An IoT security solution that helps you protect your data, privacy, and infrastructure.
  • Components:
    • Azure Sphere chip – a microcontroller unit that provides real-time processing capabilities.
    • Azure Sphere OS – an operating system based on Linux that runs on an Azure Sphere chip.
    • Azure Sphere Security Service – it supports certificate-based authentication, automatic software updates, and failure reporting. By default, the data is encrypted at rest.
  • The Azure Sphere devices can run on two types of applications:
    • High-level applications for containers.
    • Real-time capable applications (RTApps) for bare metals.

Azure IoT Products

  • Azure IoT solution accelerators allow you to customize solution templates for common IoT scenarios.
  • Azure IoT Edge enables you to deploy cloud analytics and custom business logic locally on IoT edge devices.
  • Create knowledge graphs based on digital models of entire environments using Azure Digital Twins.
  • If you need to monitor, analyze, and visualize your IoT data in real-time, you can use Azure Time Series Insights.
  • Azure Sphere is an IoT security solution that helps you protect your data, privacy, and infrastructure.
  • A real-time operating system for IoT devices, powered by MCUs is called Azure RTOS.
  • Azure SQL Edge is an optimized SQL database engine for IoT and IoT Edge deployments.

Validate Your Knowledge

Question 1

Question Type: Multiple-choice

Your company needs to embed a microcontroller unit (MCU) into several household appliances that they manufacture as part of its Smart Home product suite.

Which of the following IoT solutions can you use to create Internet-connected devices that can be updated, controlled, monitored, and maintained remotely?

  1. Azure Sphere
  2. Azure IoT Edge
  3. Azure Digital Twins
  4. Azure IoT Central

Correct Answer: 1

Azure Sphere is a secured, high-level application platform with built-in communication and security features for internet-connected devices. It comprises a secured, connected, crossover microcontroller unit (MCU), a custom high-level Linux-based operating system (OS), and a cloud-based security service that provides continuous, renewable security. The Azure Sphere MCU integrates real-time processing capabilities with the ability to run a high-level operating system. An Azure Sphere MCU, along with its operating system and application platform, enables the creation of secured, internet-connected devices that can be updated, controlled, monitored, and maintained remotely.

The key points in the scenario are “microcontroller unit” and “secured environment”. To embed a microcontroller unit to several household appliances, you can use Azure Sphere. This service allows you to create a secured environment that enables the devices to connect to the cloud. In addition, it provides a secured channel through which Microsoft can automatically download and install OS updates to deployed devices in the field to mitigate security issues.

Hence, the correct answer is: Azure Sphere.

Azure IoT Edge is incorrect because this service only helps you analyze device data locally instead of sending it to the cloud. To satisfy the requirements in the scenario, you must use Azure Sphere MCU to embed it into household appliances and to create a secured environment.

Azure Digital Twins is incorrect because this service will just create a digital representation of connected environments. Take note that you need to embed an MCU to household appliances and this service will not accomplish that requirement.

Azure SQL Edge is incorrect because this service only analyzes IoT data using the Microsoft SQL data engine. SQL Edge is mainly used for high-performance data storage and processing layer for IoT applications and solutions.


Note: This question was extracted from our AZ-900 Microsoft Azure Fundamentals Practice Exams.

For more Azure practice exam questions with detailed explanations, check out the Tutorials Dojo Portal:

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