Axelar, like Wormhole, Layer Zero, and other bridging technologies, provides generic communications, allowing many types of data and information, including the aforementioned tokens, to be transported across ecosystems. Universal communications are more complicated than the basic connections that allow token transfers, but they can also be significantly more powerful.
dApps can make contract calls across chains using two blockchains that can be connected via general messaging, allowing them to post their product on one chain and communicate with others instead of having to debut on each chain. This allows dApps to reach more users than just those on that single segregated blockchain network.
A contract call differs from a token transfer in that it is initiated by a user to perform a specific smart contract function and is not published on the blockchain. Allowing contract calls from the source chain to the destination chain gives dApps additional cross-chain flexibility and eliminates the need for you to deploy your dApp across multiple chains.
Message passing enables secure cross-chain communication, opening up new opportunities for developers in the fields of decentralized finance (DeFi), gaming, and non-fungible tokens (NFTs).
One possible application is to build platforms that host NFTs from multiple chains, allowing users of one chain to buy NFTs minted on another without switching assets from one chain to another. Using NFTs as collateral in lending applications on any blockchain is another possible NFT application. Secure cross-chain communication allows developers to build applications that can take advantage of the unique features of various blockchains, thus creating new possibilities in the decentralized web.
Axelar Pass Feature
This offers new possibilities for decentralized web applications such as DeFi, gambling, NFTs, and others. A set of permissionless validators running on a delegated proof-of-stake consensus method and a decentralized protocol that manages routing and translation ensure the security of generic message passing.
An application developer must incorporate the Axelar executable interface into the intended contract to take advantage of generic message passing. The source chain call enters the Axelar Gateway. The Axelar network acknowledges the call, deducts the usage cost in native source chain tokens, and creates an outbound transaction on the destination chain. The call is accepted and exits the Axelar Gateway to the destination chain, where the calling function is executed as if it had been made on the source chain.
This cross-chain communication approach broadens the meaning of secure interoperability, allowing developers to create new applications that can operate on multiple chains.
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