Definition: Ethereum is an open-source, globally decentralized computing architecture that executes programs known as "smart contracts."
Core Logic:
State Machine : From a computer science perspective, it is a single, globally accessible instance of state that changes according to predefined rules.
Smart Contracts : It goes beyond simple payments by allowing developers to build Decentralized Applications (DApps) that run without downtime or third-party interference.
Ether (ETH) : The native cryptocurrency used as "gas" to measure and pay for the cost of computational resources.