> For the complete documentation index, see [llms.txt](https://archivedocs.stackstate.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://archivedocs.stackstate.com/5.1/stackpacks/integrations/customsync.md).

# Custom Synchronization

## Overview

The Custom Synchronization StackPack has everything you need to automatically synchronize topology information from an external topology source.

**Use the Custom Synchronization StackPack if you want to connect an external topology source that isn't listed as a standard StackPack.**

Custom synchronization is a [StackState curated integration](/5.1/stackpacks/integrations/about_integrations.md#stackstate-curated-integrations).

## Next steps

Read up on [configuring synchronizations](/5.1/configure/topology/sync.md), follow the [Push-Integration tutorial](/5.1/develop/tutorials/push_integration_tutorial.md) or read the [Custom Synchronization developer guide](/5.1/develop/developer-guides/custom_synchronization_stackpack.md).

## Open-source

The Custom Synchronization StackPack is open-source and can be found [on StackState's gitHub page](https://github.com/StackVista/stackpack-autosync).