Definition of Done
A great article on how the DOD applies now to the Scrum Guide and the Scrum Team. The emphasis that the entire Scrum Team creates the DOD prevents from misunderstandings in the future, as I’ve personally witnessed in the past.
https://www.scrum.org/resources/blog/2020-scrum-guide-definition-done-created-scrum-team
“The entire Scrum Team is accountable for creating a valuable, useful Increment every Sprint.” While there are still explicit accountabilities for the Product Owner, Scrum Master, and Developers, all three roles must work together effectively in order to be successful with Scrum.
While the SM worked closely with the Dev team to support them creating the DOD, with this new emphasis on entire Scrum Team the potentially odd moments of ownership and contribution from the SM/PO to the DOD are less likely to happen.
the Scrum Team must create a Definition of Done
It’s a mutual effort of the whole Scrum Team to create the DOD. Stephanie describes that well in her article: https://www.scrum.org/resources/blog/2020-scrum-guide-definition-done-created-scrum-team