Ethereum 2.0 represents a major transition from the current Proof of Work (PoW) consensus mechanism to a Proof of Stake (PoS) system. This upgrade proposes a multi-phase rollout, where the Ethereum network will undergo several enhancements, including shard chains and a new beacon chain for managing PoS validators. The goal of Ethereum 2.0 is to reduce transaction costs, increase throughput, and lower energy consumption while maintaining decentralization and security. This transition is expected to take place over multiple phases, ultimately leading to a fully upgraded and more efficient Ethereum ecosystem.