zksync, Optimism, Arbitrum, DyDx, Loopring are all available now, have instant confirmations, and cost <$1 for transactions. They are layer 2's on top of Ether

zksync, Optimism, Arbitrum, DyDx, Loopring are all available now, have instant confirmations, and cost <$1 for transactions. They are layer 2's on top of Ethereum. This is why Visa and other major financial firms are building on Ethereum.