How Do ‘Flashbots’ Bundles Facilitate Private Transactions in Ethereum?

Flashbots is a service that allows users to submit transactions directly to a network of block builders (formerly miners/validators) via a private communication channel, bypassing the public mempool. These transactions are grouped into a 'bundle' and included in a block only if they are profitable for the builder.

This prevents the transaction from being seen by public searchers, thus eliminating front-running and reducing MEV extraction.