Each blockchain has unique tokens, users and dApps which work seperately from each other. This has lead to the lack of interaction with one another. Transferring of assets is also impossible from 1 blockchain to another.This is where the Cross Blockchain protocols plays a role.
Cross Blockchain protocols allows data and informations to move between the blockchains. This platform will help to interact between different blockchains without a third party intermediary. There are several projects which are already supporting Cross-Blockchain method which include Wanchain, Komodo, Polkadot, Ark and POA etc.
I understood that Cross-Blockchain allows interaction between blockchains but I didn't get why there should be an interaction between the blockchains? Why Cross blockchains are necessary? Please explain me if anyone know more about it.
Sorce: https://cryptobriefing.com/cross-blockchain-compatibility/