https://sites.google.com/ethstk.com/ethereum-20-staking/home
Ethereum 2.0, also known as ETH2 or Serenity, is an upgrade to the Ethereum blockchain that aims to improve scalability, security, and sustainability. One of the significant changes introduced in Ethereum 2.0 is the shift from a proof-of-work (PoW) consensus mechanism to a proof-of-stake (PoS) consensus mechanism.