In Agile world there are many parallel releases and many parallel activities, which performed day-in, day-out.
1. Each Delivery can have one Delivery manager (handling certain) user stories or requirements.
2. Release manager, who tracks the various states, and who is in direct contact with “stake-holders” or all other teams.
3.By the way above team will be reporting a program management team.
4. 1, 2, 3 : are outside actual team, who is working on the integration, development.