The ability of different blockchains to communicate, exchange information and build together seamlessly.
Interoperability allows for different blockchains to share data and transfer digital assets across networks seamlessly.
The foundation of interoperability is cross-chain messaging which allows different blockchains to write and read data off of each other. Interoperability has a huge role in web 3.0 as interconnectedness supports mutual growth and allows users to flexibly interact across various networks without needing an intermediary, which was the main goal behind cryptocurrencies and decentralization.