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The Internet Computer is a layer-1 blockchain that allows you to create arbitrarily scalable web3 dapps, DeFi protocols, games, social media, and metaverse projects that run end-to-end on the blockchain. It is a set of protocols that allow independent data centers around the world to band together and offer a decentralized alternative to the current internet cloud providers.
A significant aspect of the Internet computer is the Nervous System (NNS) - an open algorithmic governance system that governs the network and tokenomics that enables the development of open internet services.