Polygon (MATIC), a layer 2 (L2) scaling solution for Ethereum (ETH), will continue to focus on zero-knowledge (ZK) technologies as the team believes it is “the ultimate holy grail for blockchain scaling,” Polygon’s Co-founder and Chief Operations Officer (COO) Sandeep Nailwal said in an exclusive interview with Cryptonews.com during the Blockchain Economy Expo 2021 conference in Dubai this week.