Which method can provide a list of devices associated with a template in IoT Central?

Using the REST API to list devices associated with a template in IoT Central is the most effective method because it allows for a programmatic way to retrieve device information that is directly linked to a specific template. The REST API provides endpoints that can query various resources within IoT Central, including device templates and the devices that belong to them. By making a GET request to the appropriate endpoint, you can obtain a structured and detailed list of devices that have been provisioned based on the designated template.

This method is highly adaptable and can be integrated into applications or automation processes, enabling real-time access to device data. Additionally, using the REST API minimizes the risk of manual errors and allows for enhanced data handling capabilities, making it a preferred approach for developers and system integrators who are working with IoT Central.

Other methods mentioned, such as browsing the Azure IoT device catalog, may not provide the same level of specificity or ease of use for retrieving devices based on templates. Importing a JSON file is typically more associated with initializing devices or configurations rather than retrieving a list. Creating a new device template does not address the need to retrieve existing devices. Therefore, using the REST API stands out as the best choice for this task.