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Telemetry is the automated process of collecting, transmitting, and analyzing data about how your application and its features are used. Enabling telemetry for feature flags offers valuable insights into the behavior and impact of feature rollouts, helping teams iterate faster, enhance user experience, detect issues early, and validate the effectiveness of new features. With telemetry, teams can answer critical questions such as:
- Is a feature enabled or disabled as expected?
- Are specific users or groups accessing the new feature?
- Is a feature causing performance regressions or errors?
- What is the impact of a feature on key metrics like engagement or conversion?
By leveraging telemetry data, organizations can make informed, data-driven decisions, quickly identify and resolve issues, and optimize feature delivery for better business and user outcomes.
Telemetry is the process of collecting, transmitting, and analyzing data about the usage and performance of your application. It helps you monitor feature flag behavior and make data-driven decisions. When a feature flag change is deployed, it's often important to analyze its effect on an application. For example, here are a few questions that may arise:
- Are my flags enabled/disabled as expected?
- Are targeted users getting access to a certain feature as expected?
- How does a variant affect customer engagement?
These types of questions can be answered through the emission and analysis of feature flag evaluation events.
Prerequisites
- The feature flag created in Use variant feature flags.
Connect to Application Insights
Open your App Configuration store in the Azure portal.
In the Telemetry section, select the Application Insights (preview) blade.
Select the subscription, resource group. Then either select your existing Application Insights resource you want to connect to your App Configuration store to, or select Create new to create a new Application Insights resource.
Select the Connect button.
Enable telemetry for a feature flag
Open your App Configuration store in the Azure portal and select the Feature manager blade under the Operations section.
Select the feature flag named Greeting. If you don't have it, follow the instructions to create it. Then, right-click on the feature flag and select Edit.
In the new view, select the Telemetry tab.
Check the Enable Telemetry box and then select the Review + update button at the bottom of the page.
Continue to the following instructions to use telemetry in your application for the language or platform you're using.