Ottoman government placed supreme authority in the sultan while the grand vizier handled the empire's day-to-day rule. A capable appointee needed enough intelligence and authority to manage the state without becoming a rival to the throne. The arrangement also made the grand vizier a practical choice for distant strategic direction. A sultan could not safely remain away from Constantinople and out of contact for a long maritime campaign.
Notable Point ยท 12:24-14:08
How the sultan and grand vizier divided imperial rule
Ottoman grand viziers handled day-to-day government and could direct distant campaigns while the sultan retained supreme authority.