Last updated on February 13, 2026
Azure IoT Cheat Sheet
- 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 and Event Grid integration enable automated responses to device-reported state changes.
- Supports MQTT, AMQP, and HTTPS protocols.
- Device identity registry stores permitted devices and modules.
- Authentication: SAS token-based or X.509 certificate authentication. X.509 is more secure and scalable.
- IoT Hub Device Provisioning Service: Zero-touch, just-in-time provisioning at scale.
- Device twins: Store and retrieve device state information (properties, tags, desired/reported states).
- File uploads: Devices can upload files from connected sensors.
- Direct methods: Invoke commands on devices (e.g., reboot) with request-reply interaction.
- Built-in endpoint: Collects device-to-cloud messages, retained for up to seven days.
- Message routing: Send data to custom endpoints (Storage, Event Hubs, Service Bus, Cosmos DB).
- Event Grid integration: Fan out data to multiple subscribers for event-driven architectures.
- Supports TLS 1.2 (recommended), 1.1, and 1.0 for backward compatibility.
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.
- Share dashboards with all users or keep them private.
- Build custom rules when device telemetry crosses a specified threshold.
- Telemetry mapping: Simplify or normalize complex device telemetry on ingress.
- You can apply single or bulk updates by creating jobs.
- Data export: Configure exports to send telemetry, property changes, and device template changes to other Azure services for analytics and storage.
- Integrations & REST APIs
- Build custom IoT solutions and integrations using IoT Central REST APIs.
- Use cases: mobile companion apps, line-of-business integrations, device management applications.
- User Roles
- Solution builder: Creates application, configures rules, integrations, and customizations.
- Operator: Manages connected devices.
- Administrator: Manages user roles, permissions, and managed identities.
- Device developer: Creates code running on devices or IoT Edge modules.
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 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.
Validate Your Knowledge
Question 1
Question Type: Single choice
In the Azure Shared Responsibility Model, whose responsibility is it to maintain the application in an Azure virtual machine?
- Azure
- Customer
- Both Azure and the customer
- Neither Azure nor the customer
Correct Answer: 2
As you consider and evaluate public cloud services, it’s critical to understand the shared responsibility model and which security tasks are handled by the cloud provider, and which tasks are handled by you. The workload responsibilities vary depending on whether the workload is hosted on Software as a Service (SaaS), Platform as a Service (PaaS), Infrastructure as a Service (IaaS), or in an on-premises datacenter
In an on-premises datacenter, you own the whole stack. As you move to the cloud some responsibilities transfer to Microsoft. The following diagram illustrates the areas of responsibility between you and Microsoft, according to the type of deployment of your stack.
Azure Virtual Machines are image service instances Azure IaaS uses to deploy persistent VMs with nearly any server workload that you want.
Infrastructure as a service (IaaS) is the most flexible category of cloud services, as it provides you with the maximum amount of control for your cloud resources. In an IaaS model, the cloud provider is responsible for maintaining the hardware, network connectivity (to the internet), and physical security.
You’re responsible for everything else: operating system installation, configuration, and maintenance; network configuration; database and storage configuration; and so on. With IaaS, you’re essentially renting the hardware in a cloud datacenter, but what you do with that hardware is up to you.
IaaS places the largest share of responsibility with you. The cloud provider is responsible for maintaining the physical infrastructure and its access to the internet. You’re responsible for installation and configuration, patching and updates, and security.
Hence, the correct answer is Customer.
Customer and Both Azure and the customer is incorrect because under the shared responsibility model for infrastructure as a service offering, the customer is responsible for maintaining the application.
Neither Azure nor the customer is incorrect as this task falls under the responsibilities of the customer.
Azure Internet of Things References:
https://docs.microsoft.com/en-us/azure/security/fundamentals/shared-responsibility
https://learn.microsoft.com/en-us/azure/virtual-machines/
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:
Azure Internet of Things References:
https://docs.microsoft.com/en-us/azure/iot-hub/about-iot-hub
https://docs.microsoft.com/en-us/azure/iot-central/core/overview-iot-central
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Written by: Jon Bonso
