What are concurrent tasks that depend on a single prior task called?

The term that refers to concurrent tasks that rely on a single prior task is best captured by the concept of "Successor Tasks." In project management terminology, a successor task is defined as any activity that follows another task and cannot begin until the predecessor task has been completed. This reflects a dependency relationship where the initiation of one or more tasks is contingent upon the completion of another.

When multiple tasks are dependent on a single preceding task, they are progressing in parallel after the completion of that prerequisite. This allows for efficient project scheduling and resource allocation since several tasks can be executed simultaneously once the required preliminary task is finished. Understanding this concept is crucial for effective project management and scheduling, as it helps analysts and project managers identify critical paths and dependencies in their project plans.

Other concepts in this area might not accurately represent the specific relationship described in the question, making "Successor Tasks" the most precise choice.