What is Ethereum?

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Ethereum is a decentralized blockchain network powered by the Ether token that enables users to make transactions, earn interest on their holdings through staking, use and store nonfungible tokens (NFTs), trade cryptocurrencies, play games, use social media and so much more.

It’s currently a proof-of-work (PoW) blockchain but is making the move to proof-of-stake (PoS) with Ethereum 2.0 for scalability purposes and for a more environmentally friendly approach.

Many consider Ethereum to be the internet's next step. Ethereum is next-generation web supports decentralized applications (DApps), decentralized finance (DeFi) and decentralized exchanges (DEXs), for instance.

Recently, the process of buying and selling Ethereum has become much easier. There are many online exchangers who are ready to provide their platform for those who need it.
Here https://www.bestchange.com/ethereum-to-visa-mastercard-usd.html you go to many different online exchangers for eth to usd