What is a succinct report?

What is a succinct report?  Could it not be 10 pages or less?  One reads that IBM decision papers are limited to that length, and we all recall the single-sheet Ringo Sho approach to important decisions at Toyota.

Project management always refers to the Triple Constraint and involves a project team, plus a Gantt chart with critical path.

Operations management refers here to the daily processes at your organization; you should show how they will be improved after the project is completed.

Information systems management refers to the support provided by IS and included IT both during the project and also afterwards; you should describe it.