# Deployment and Testing

Once a release candidate (RC) of E3SM-Unified has been successfully built, it
must be thoroughly tested across supported HPC systems before a full release
can occur. This phase ensures compatibility with system modules,
performance-critical tools, and real-world analysis workflows.

```{toctree}
:maxdepth: 1

overview
spack-updates
mache-updates
deploying-on-hpcs
troubleshooting-deploy
```