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

# Concepts

- [What is Connext?](https://docs.connext.network/concepts/readme.md)
- [How It Works](https://docs.connext.network/concepts/how-it-works.md)
- [Architecture](https://docs.connext.network/concepts/how-it-works/architecture.md)
- [Transaction Lifecycle](https://docs.connext.network/concepts/how-it-works/transaction-lifecycle.md)
- [Background](https://docs.connext.network/concepts/background.md)
- [What is a Bridge?](https://docs.connext.network/concepts/background/what-is-a-bridge.md)
- [Modular Bridges](https://docs.connext.network/concepts/background/modular-bridges.md)
- [Message Verification](https://docs.connext.network/concepts/background/verification-mechanisms.md)
- [Use Cases](https://docs.connext.network/concepts/use-cases.md)
- [FAQ](https://docs.connext.network/concepts/faq.md)