A modern crypto exchange should offer multi-currency wallet integration, high liquidity, an intuitive trading engine, advanced charting tools, and robust KYC/AML compliance. Security features like two-factor authentication, DDoS protection, and cold wallet storage are non-negotiable. Instead of trying to build all these features from scratch, many successful platforms collaborate with crypto exchange developers who provide modular and customizable frameworks. This ensures all essential features are covered efficiently while allowing room for innovation.