# Interoperability in SPL404 protocols

### SPL404 will make use of Wormhole

[Wormhole](https://wormhole.com/) is a protocol that validates and secures cross-chain communication for Web3, through messages known as verifiable action approvals (VAAs). Wormhole's infrastructure enables dApp users to interact with any asset or application, on any connected chain, with one click. Powered by a multi-signature schemed protocol and 19 signing [Guardians](https://docs.wormhole.com/wormhole/explore-wormhole/guardian), Wormhole allows dApps to pass arbitrary messages across chains.

Wormhole consists of multiple modular swap-in components that can be leveraged independently and supports an increasing number of composable applications built by numerous teams. Building xDapps on top of their protocol allows for quick cross-chain asset transfers and cross-chain logic to deliver maximal Web3 interoperability. Wormhole's architecture includes a signing Guardian network, bridging smart contracts, and relayers. Take a look at the tech stack diagram for more details.

<figure><img src="https://2451970460-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FDJSb3h9iqctSTDZEv4w1%2Fuploads%2Fdg6tlZ6ZSlQ0DPmy2UZn%2Fwormhole-1.webp?alt=media&#x26;token=3d9d9f24-d25b-4eb5-8a2e-019785f8e119" alt=""><figcaption></figcaption></figure>

