How Does Proof-of-Stake Change the Role of a ‘Miner’ in Transaction Selection?

In a Proof-of-Stake (PoS) system, 'miners' are replaced by 'validators' or 'forgers'. Validators are chosen based on the amount of staked cryptocurrency they hold.

They propose and attest to new blocks. The selection of transactions remains economically driven, prioritizing high fees, but the security and block creation process relies on staked capital rather than computational power.