When multiple Scrum Teams are working on the same product, they must mutually agree on and share a common Definition of Done. This shared DoD ensures that all teams are aligned on the criteria for completing work, which is crucial for maintaining a cohesive and integrated product.
Having a shared Definition of Done also facilitates collaboration and coordination between teams, as everyone has a common understanding of what is required to consider work complete. This mutual agreement helps prevent discrepancies and ensures that the product development process is seamless and efficient.