Poloniex is a cryptocurrency exchange that allows users to trade a wide range of digital assets, including Bitcoin, Ethereum, and various altcoins. Known for its robust trading tools and competitive fees, Poloniex serves both beginner and advanced traders. It offers spot trading, margin trading, and lending services, giving users a wide variety of options to manage and grow their crypto portfolios. Poloniex also provides strong security features, including two-factor authentication (2FA) and cold storage for digital assets.