> ## Documentation Index
> Fetch the complete documentation index at: https://docs.theblockchainlibrary.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Cross-Chain Messaging

> Protocols and mechanisms that transmit authenticated messages or instructions between separate blockchain networks.

# Cross-Chain Messaging

Protocols and mechanisms that transmit authenticated messages or instructions between separate blockchain networks.

## Definition

Protocols and mechanisms that transmit authenticated messages or instructions between separate blockchain networks.

## Why it matters

Interoperability allows assets, messages, and applications to operate across otherwise separate networks.

## Related knowledge

* [Bridge](/generated/v2/glossary/bridge) — term
* [Cross-Chain](/categories/cross-chain) — term
* [Relayer](/generated/v2/glossary/relayer) — term
* [Wrapped Asset](/generated/v2/glossary/wrapped-asset) — term

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**Canonical knowledge ID:** `glossary:cross-chain-messaging`