Polygon (MATIC) has introduced AggLayer, a solution aiming to unify blockchain ecosystems by aggregating sovereign chains. This innovation aims to address the current fragmentation of Layer 1 and Layer 2 chains, which is seen as a significant barrier to mass adoption. AggLayer employs zero-knowledge proofs to create a secure cross-chain ecosystem, enabling seamless communication, asset transfers, and data sharing across various networks.

Source: https://Blockchain.News/news/polygon-introduces-agglayer-unify-blockchain-ecosystem