> For the complete documentation index, see [llms.txt](https://docs.cloud4.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cloud4.ai/concept.md).

# Concept

- [Organization Structure](https://docs.cloud4.ai/concept/organization-structure.md)
- [C4AI Command](https://docs.cloud4.ai/concept/c4ai-command.md)
- [SIC (Service Identity Code)](https://docs.cloud4.ai/concept/sic-service-identity-code.md): Unified C4AI service/entity identifier
- [.cc4](https://docs.cloud4.ai/concept/.cc4.md): Unified file extension for data transfer across environments
- [Glossary](https://docs.cloud4.ai/concept/glossary.md): Terminology