/en/tags/gas-bill-reduction/Recent content in Gas-Bill-Reduction on Comprehensive Explanations of Web3, Cryptocurrencies, and BlockchainHugo -- gohugo.ioenMainnet.jpTue, 16 Jun 2026 14:20:00 +0900/en/web3-altcoin/role-of-layer-2-arbitrum-optimism-etc.-and-gas-fee-savings/Tue, 16 Jun 2026 14:20:00 +0900/en/web3-altcoin/role-of-layer-2-arbitrum-optimism-etc.-and-gas-fee-savings/<img src="/img/thumbnail/layer-2-arbitrum-optimism-gas-savings-en.png" alt="Featured image of post Role of Layer 2 (Arbitrum, Optimism etc.) and Gas Fee Savings" /><p>As users on Ethereum multiply, the network faces high gas fees and slow transactions. The leading technology engineered to solve this scaling bottleneck is &ldquo;Layer 2&rdquo; (L2). We examine L2 networks like Arbitrum and Optimism and check how they cut fees.</p> <h2 id="ethereums-scaling-bottleneck">Ethereum&rsquo;s Scaling Bottleneck </h2><p>Prioritizing decentralized security, Ethereum&rsquo;s base layer (L1) processes limited transactions per block, causing gas fees to spike to tens of dollars during high traffic.</p> <h2 id="the-layer-2-architecture">The Layer 2 Architecture </h2><p>L2 networks process transaction logs off the Ethereum main chain, roll them up into batches, and post only compressed proofs back to L1 (via Rollup technology).</p>