> 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/background.md).

# Background

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[What is a Bridge?](/concepts/background/what-is-a-bridge.md)
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[Modular Bridges](/concepts/background/modular-bridges.md)
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[Message Verification](/concepts/background/verification-mechanisms.md)
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