Five core infrastructure layers are shaping Web3: Layer2, ZK, modular chains, cross-chain protocols and decentralized storage
Foresight published an overview of five infrastructure technologies it sees as central to Web3’s shift from a single-chain niche to multi-chain adoption at scale. The piece focuses on Layer2 scaling, zero-knowledge proofs, modular blockchains, cross-chain interoperability and decentralized storage. According to the article, Layer2 has become the main answer to congestion and high fees on Ethereum and other major chains, with Optimistic Rollup and ZK-Rollup representing the two dominant paths. It also highlights data availability as a core security consideration for Layer2 systems. On zero-knowledge technology, Foresight describes ZK as a base cryptographic tool for privacy and efficient verification, with use cases spanning ZK-Rollup, ZK-EVM, privacy payments, on-chain identity and secure cross-chain interaction. The article also argues that modular blockchains are changing public-chain design by separating consensus, execution, settlement and data layers into independent modules. In parallel, cross-chain messaging protocols and unified asset standards are being used to address fragmentation across multiple chains, while IPFS, Filecoin and Arweave are presented as key pieces of decentralized storage infrastructure for NFT metadata, AI datasets and on-chain archives. Foresight’s conclusion is that these five technologies together support Web3’s path toward large-scale commercial deployment.








