Azure Monitor Application Insights variable retention is now available in preview
Published date: August 26, 2019
It’s now possible to configure the data retention on your Azure Monitor Application Insights resources from 30 days up to 730 days. To change the retention, from your Application Insights resource, go to the Usage and Estimated Costs page and select the Data Retention option. Billing for additional retention is expected to start in November 2019 following the same pricing as used for all Azure Monitor log data retention.