Answer:
log-based metrics
Step-by-step explanation:
Log-based metrics allow you to collect and analyze data from log files, such as application logs and web server logs, to gain insights into the performance and behavior of your Azure App Service web app. These metrics can include information such as request and response times, error rates, and user behavior. This data can be used to support the development of a dashboard and near-real-time alerts for the web app, by providing detailed information about the performance and usage of the app. Additionally, log-based metrics can be queried and analyzed using Azure Monitor Log Analytics, which provides a powerful and flexible query language for extracting insights from log data.