# Design

- [Architecture](https://urban.digit.org/design/architecture.md): DIGIT Infra and architecture details
- [Building Blocks & Services](https://urban.digit.org/design/building-blocks-and-services.md)
- [Security](https://urban.digit.org/design/security.md)
- [Security Guidelines](https://urban.digit.org/design/security/security-guidelines-handbook.md)