$ETH Ethereum, as a leading platform for smart contracts and decentralized applications (DApp), is innovative due to its programmable blockchain technology. With the ETH 2.0 upgrade, the transition to a Proof of Stake (PoS) mechanism significantly reduces energy consumption, enhances scalability, and improves sustainability. The explosion of DeFi, NFTs, and the metaverse further highlights its ecological value. However, high gas fees and network congestion remain challenges. In the long run, Ethereum may become the core of Web3 infrastructure, but it needs continuous optimization to cope with competition. Investment should focus on technological advancements, regulatory dynamics, and ecological activity.