# Previous versions

- [Migration to V4.3](/previous-versions/migration-to-v4.3.md): Thi article describes breaking changes between PORTOS API v4.2 and v4.3.
- [Migration to V4.2](/previous-versions/migration-to-v4.2.md): Thi article describes breaking changes between PORTOS API v4.1 and v4.2.
- [Migration to V4.1](/previous-versions/migration-to-v4.1.md): Thi article describes breaking changes between PORTOS API v4.0 and v4.1.
- [Migration to V4](/previous-versions/migration-to-v4.md): Thi article describes breaking changes between PORTOS API v3.X and v4.0.
- [Legacy documentation](/previous-versions/legacy-documentation.md)