Smash the Microsoft Azure Fundamentals Exam 2025 – Dive into the AZ-900 Adventure!

The correct answer is that Azure Monitor begins collecting data when you add a resource to a new Azure subscription. This is because Azure Monitor is designed to automatically start gathering data from resources as they are created within a subscription. Each Azure resource has built-in monitoring capabilities, and Azure Monitor leverages these capabilities to collect telemetry data such as performance metrics and event logs.

This automatic data collection helps organizations keep an eye on their resources from the moment they are provisioned, allowing for timely analysis and monitoring without requiring manual configuration initially.

Other options suggest different triggers for data collection. For instance, while diagnostics may enhance the type of data you gather, Azure Monitor still collects some basic data as soon as resources are provisioned, regardless of whether those more detailed diagnostics are enabled. Similarly, simply launching the Azure Management Portal or creating metrics and logs data stores are not triggers for data collection; they are more related to managing or using the monitoring features rather than initiating data collection.