Order matching refers to the process of pairing buy and sell orders for assets, such as cryptocurrencies, in a trading platform. When a trader places an order, it is submitted to a centralized or decentralized exchange. The order can either be a market order, which seeks to execute immediately at the current market price, or a limit order, which specifies a price at which the trader is willing to buy or sell.The order matching engine is a critical component of the exchange. It constantly scans all open orders and finds compatible buy and sell orders that can be executed. Once a match is found, the exchange facilitates the transaction, transferring the digital asset from the seller to the buyer, while also adjusting their respective balances.Efficient order matching ensures that trades happen quickly and fairly, providing liquidity to the market. It plays a crucial role in price discovery, as the continuous interaction of buy and sell orders helps to establish the current market price of an asset. Various strategies and algorithms can be employed in this process to enhance performance and efficiency.