ERC-20 is the token standard widely used on Ethereum, enabling the creation and smooth functioning of thousands of cryptocurrencies on the same blockchain.
ERC-20 sets rules and guidelines for how tokens should behave on Ethereum, providing standardization and order in the cryptocurrency ecosystem.
ERC-20 has become the default token standard on Ethereum due to its simplicity in launching tokens, creating a common language for developers globally.
ERC-20 defines core functions and events like totalSupply, balanceOf, and transfer, making it easier for wallets, exchanges, and dApps to interact with any ERC-20 token.