Ethereum, a leading public blockchain, has been grappling with high transaction volumes, soaring transaction fees, and scalability issues. These challenges have spurred the development of Layer 2 solutions (L2s) such as Arbitrum, Optimism, ZK-rollups, and multiple sidechains. These L2 solutions aim to alleviate the congestion on the Ethereum network by processing transactions off-chain, thereby reducing fees and increasing transaction speed. The adoption of these solutions could significantly enhance Ethereum's scalability and usability, marking a pivotal moment in the evolution of blockchain technology.