# Introduction

<div id="bkmrk-this-discovery-plu"><div>This Azure Application Gateway discovery plugin for Pandora FMS is designed to automate the monitoring of **Azure Application Gateway** resources in an Azure subscription. The plugin dynamically discovers the available Application Gateways, collects their main metrics through Azure Monitor and generates agents and modules in Pandora FMS.</div><div>The plugin can work in two modes: creating one agent for each discovered Application Gateway, or sending all modules to a single agent configured by the user. It also supports resource group filtering, custom prefixes, discovered entity cache control, metric group selection and module filtering with allow and deny regular expressions.</div><div>The implemented metrics are based on Azure Application Gateway metrics, including performance, requests, backend health, latency, traffic, security, capacity, WebSocket, WAF and resource count metrics.</div></div>