![Crypto Terms Glossary: What is Cross-Chain Message Passing (XCMP)? Crypto Terms Glossary: What is Cross-Chain Message Passing (XCMP)?](/img/3/349/what-is-cross-chain-message-passing-xcmp-sm.webp)
Cross-chain describes the transfer of data, tokenized assets, or other types of information from one independent blockchain network to another. On the Polkadot network, XCMP is a specialized mechanism used to send information between different blockchains linked together on Polkadot's interoperable network. The XCMP system relies on Polkadot's collator nodes to route messages between blockchains.