What was Ethereum(ETH) 2.0 and what changes did it bring?

What is Ethereum 2.0, and what significant changes did it introduce to the Ethereum network? Please elaborate on its key features, including the transition from proof-of-work to proof-of-stake, scalability improvements, and any enhancements in security and sustainability that have impacted the overall functionality of Ethereum as a blockchain platform.

#Crypto FAQ

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