
Application Insights is a feature of Azure Monitor, and it provides application performance monitoring features. APM tools are very useful to analyze applications from development, testing and production release.

**Step 1**

Application insight is accessed through the access token or API keys. To create the access token, you should have access to the appinsight portal.

![app insight menu](/assets/blog/helpers/appInsight-left-menu.png)

It is really straight forward, you can see the option left side of the page of application insight in the configuration section. Along with properties, smart detection settings, network isolation and Usage and estimate costs you can find the API access token option the configuration tile.

Select the API keys item,

**Step 2**

You will get one popup with existing access token history (you might see the application id is pre-populated on the displayed popup body).

![access key history](/assets/blog/helpers/access-key-history.png)

**Step 3**

Select the create API key option, then you will get one more popup. This popup will ask you to fill the certain options like description of the key the usage of the Keys. (Read telemetric, write annotations and authenticate SDK control channel).

![create access key](/assets/blog/helpers/appInsight-create-access.png)

Once you have done all the required steps, finally click on the Generate Key button to create the new key. Copy and keep in notepad for future usage.


Application Insights is an feature of Azure Monitor and it provides application performance monitoring features. APM tools are very useful to analyse applications from development, testing and production release. 

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