# Aurabase Database Branching & Previews Reference

> Documentation: https://aurabase.cloud/en/docs/guides/preview-envs

- **Ephemeral Environments**: Database clones per GitHub Pull Request for isolated migration testing.
- **Copy-on-Write**: Near-instantaneous cloning (< 10s) regardless of database volume.
- **Automated PII Masking**: Detection and anonymization of sensitive personal data during branch seeding.
- **Lifecycle Cleanup**: TTL and automatic resource deletion upon PR merge or closure.
- *Transparency note*: Planned technical roadmap feature (target model documented).