Shared vs Based Sequencing: Who Really Orders Rollups?

Shared vs Based Sequencing: Who Really Orders Rollups?

Rollups need a sequencer to determine the order in which transactions are processed, but how that sequencing happens can significantly affect decentralization, interoperability, MEV, and transaction speed. Two approaches have emerged as alternatives to the traditional model of giving each rollup its own sequencer: shared sequencing and based sequencing. Shared sequencing creates a common ordering layer that can coordinate transactions across mul…