Understanding the ERC-20 Token Standard provides blockchain enthusiasts with a comprehensive guide on ERC-20 tokens, explaining their history, functionality, and impact on the Ethereum ecosystem. The article addresses the benefits and limitations of these tokens, making it ideal for developers and investors seeking clarity on smart contract interactions, liquidity, and token customization. Organized into sections, it covers the basics, historical context, operational mechanics, and notable uses of ERC-20 tokens like USDT and BNB. Key topics include interoperability, security, and the challenges posed by high transaction fees and compatibility issues.