The ability to ochestrate a series of events is a powerful feature, and MassTransit makes this possible.
A saga is a long-lived transaction managed by a coordinator. Sagas are initiated by an event, sagas orchestrate events, and sagas maintain the state of the overall transaction. Sagas are designed to manage the complexity of a distributed transaction without locking and immediate consistency. They manage state and track any compensations required if a partial failure occurs.