Ethereum excels at providing a secure, decentralized, and globally accessible settlement layer because of its robust proof-of-stake consensus and massive developer ecosystem. For example, its network secures over $50B in Total Value Locked (TVL) and processes complex smart contracts for protocols like Uniswap and Aave. However, this comes with variable, auction-based gas fees that can spike during congestion, making cost predictability a challenge for high-frequency applications.