A. Each Scrum Team delivers Increments in its own code branch. After UAT is performed at the Sprint Review, the code branch is isolated until enough Increments are considered acceptable. All code branches will then be merged during the release phase.

B. Each Scrum Team delivers functionality at the end of each Sprint. New Product Backlog items will then be added to the next Sprint Backlog to integrate their functionality with the other teams to create a unified Increment.

C. All Scrum Teams agree on a mutual understanding of 'done' that defines all work necessary to deliver a potentially shippable Increment that includes all previous Increments delivered for the product.

D. Wait until enough of the infrastructure and architecture is in place before starting the first Sprints. This will increase the success of delivering integrated Increments in Sprint 1.