> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/cortex-xdr-agent/8.7/introduction.md).

# Introduction

Cortex XDR agent is installed on all endpoints in your organization. It works in conjunction with your Cortex platform to monitor and protect these endpoints from a wide range of security threats. The agent collects and sends endpoint telemetry data to the Cortex server, where it is analyzed for suspicious activities, indicators of compromise, and potential security incidents. The Cortex XDR agent plays a crucial role in providing real-time visibility into endpoint activity, detecting and blocking malware, analyzing endpoint behavior for signs of compromise, and facilitating response actions. It helps security teams identify and respond to threats effectively, minimizing the risk of data breaches and unauthorized access. The Cortex XDR agent communicates with the server at a 5-minute heartbeat interval to send status information and retrieve the latest security policy.

This guide explains the installation and configuration procedures for Cortex XDR agent setup and operation on, Windows, MacOS, and Linux operating systems. Additional guides are available for agent installation and operation on Android and iOS devices.

For compatibility with operating systems per agent release versions, see [Where can I install the Cortex XDR agent?](/compatibility-matrix/where-can-i-install-the-cortex-xdr-agent.md).

With every Cortex product release, new agent features are released with specific agent versions. For feature support, known and addressed issues, and changes to default behavior by Cortex XDR agent version, see the [Cortex XDR Agent Releases](/agent-release-notes/cortex-xdr-agent-releases/readme.md).


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