Both Optimism and Arbitrum offer L2 scaling solutions, which means both focus primarily on improving transaction speed and reducing fees in the pursuit of more scalability. Both of them have different tactical approaches. However, they share the same core traits, which involve Ethereum settlement and data availability. So where does the difference lie? It lies in their architectural foundation. Optimism strictly aligns with the Ethereum network, using ETH as its gas token. Arbitrum, on the ot...