Best Bid-Offer (BBO) is a fundamental concept in crypto trading that represents the highest bid and lowest ask prices available on the order book at any moment. Understanding BBO enables traders to optimize order execution, secure the most favorable prices, and gauge real-time market liquidity. The best bid reflects the highest price buyers pay, while the best offer shows the lowest price sellers accept—the difference between them is the bid-ask spread, a key liquidity indicator. On Gate and other platforms, BBO automation dynamically adjusts limit orders to match current market quotes, eliminating manual price entry delays. This feature reduces slippage, accelerates order placement, and simplifies trading, particularly valuable during volatile market conditions. By leveraging BBO effectively, traders make faster, informed decisions and achieve better overall execution probability and trading performance.