Five new Scrum Teams have been created to build one product.

The Scrum Master should do this because it is the most effective way to ensure that the Scrum Teams are self-organizing, cross-functional, and collaborative. The Scrum Master can help the Scrum Teams to understand the benefits of working together as one integrated team, rather than as separate component teams. The Scrum Master can also facilitate the communication and coordination among the Scrum Teams, and support them in resolving any dependencies or conflicts that may arise.

References:

Scrum Guide 2020, page 7: “Scrum Teams are cross-functional, meaning the members have all the skills necessary to create value in each Sprint.”

Scrum Guide 2020, page 7: “Scrum Teams are self-managing, meaning they internally decide who does what, when, and how.”

Nexus Guide 2020, page 5: “When multiple Scrum Teams are working together on the same product, there are additional complexities that arise. These complexities can be reduced by having the teams adhere to a common definition of “Done” and a single Product Backlog.”