# First-Party Module

> An infrastructure module written and maintained by your own organization.

A *first-party module* is an infrastructure module written and maintained by your organization, typically stored in your stack repository under a directory configured by the `iac_dir` [repo variable.](https://panfactum.com/docs/main/reference/configuration/repo-variables)

First-party modules are written in OpenTofu/Terraform HCL syntax and follow the same conventions as any other module. They are deployed via Terragrunt using `include.panfactum.locals.source` to automatically resolve versioning.

Common uses for first-party modules include:

- Deploying your own application workloads
- Combining multiple Panfactum submodules into higher-level abstractions
- Adding organization-specific infrastructure not covered by Panfactum modules

First-party modules may reference Panfactum submodules as child modules to leverage shared infrastructure patterns.