# Understanding BNB in the Cryptocurrency World - Article Introduction
BNB has evolved into a critical utility token powering the BNB Chain ecosystem since its 2017 launch. This comprehensive guide explores BNB's journey from ICO to multi-functional digital asset, covering its technical infrastructure, deflationary supply mechanism, and diverse applications across transaction fees, DeFi platforms, and ecosystem participation. Whether you're a trader seeking fee discounts on Gate, a DeFi enthusiast exploring yield opportunities, or an investor evaluating blockchain assets, this article addresses key questions about BNB's functionality, market positioning compared to Bitcoin and Ethereum, acquisition methods, risk factors, and real-world use cases within the Binance ecosystem. Discover how BNB drives network security through staking, enables seamless blockchain transactions, and creates tangible value for community participants across the expanding crypto landscape.