---
title: Joining a PingAuthorize Server to an existing PingDirectory Server topology
description: To use automatic backend discovery, the PingAuthorize Server must be a member of the same topology of each backend PingDirectory Server.
component: pingauthorize
version: 11.1
page_id: pingauthorize:pingauthorize_server_administration_guide:paz_join_to_existing_pd_topo
canonical_url: https://docs.pingidentity.com/pingauthorize/11.1/pingauthorize_server_administration_guide/paz_join_to_existing_pd_topo.html
llms_txt: https://docs.pingidentity.com/pingauthorize/llms.txt
docs_for_agents: https://developer.pingidentity.com/build-with-ai/docs-for-agents.md
revdate: July 29, 2022
---

# Joining a PingAuthorize Server to an existing PingDirectory Server topology

To use automatic backend discovery, the PingAuthorize Server must be a member of the same topology of each backend PingDirectory Server.

You can join a PingAuthorize Server to a PingDirectory Server topology at the time that you set it up or after setup using the `manage-topology` command.

For information about these options, see:

* [Joining a topology at setup](paz_join_topo_setup.html)

* [Joining a topology with manage-topology](paz_join_topo_manage_topology.html)