MEV bots comb blockchain mempools to extract value from pending transactions. Every swap, liquidation, and protocol interaction creates profit potential for bots fast enough to exploit timing gaps before block confirmation.

Successful MEV operations require low-latency infrastructure, real-time transaction decoding, and precise opportunity detection. Bots must monitor mempool dynamics across DeFi protocols like Uniswap, Aave, and Compound to identify arbitrage, liquidations, and sandwich attacks.

Implementation involves WebSocket subscriptions, transaction parsing, gas optimization, and bundle submission via Flashbots. Searchers retain 10-50% of extracted value after sharing profits with block builders and validators. Infrastructure costs range from $500-2,000 monthly.

Multi-chain strategies and cross-DEX arbitrage offer emerging opportunities. However, rising competition compresses margins. Builders are increasingly implementing fair ordering and encrypted mempools to reduce exploitable MEV.