By breaking down the work into smaller, manageable chunks, sprints provide a clear sense of progress and keep motivation high throughout the project.
Work breakdown structures (WBS) help project leaders organize large projects into smaller, more manageable steps.
A memo written in a good format helps PMs communicate the intent correctly and provide the right set of actions to their audience.
Both scrum and Kanban are great and can be practiced in any kind of project, provided you know how efficiently they can be used to deliver.