Like Bitcoin, the Ethereum community exists on lots of computer systems worldwide, way to customers collaborating as “nodes,” in place of a centralized server. This makes the community decentralized and fairly resistant to attacks, and basically not able to head down as a result. If one laptop is going down, it doesn’t rely due to the fact lots of others are retaining the community up.
Ethereum is basically a single, decentralized machine that runs a laptop known as the Ethereum Virtual Machine (EVM). Each node holds a replica of that laptop, that means that any interactions ought to be proven so everybody can replace their copy.