As an IT services consultant, hand diagrams were often more effective at getting customer buy-in for technology improvements than written quotes and proposals alone.
Diagrams below illustrated work anticipated for server, email, and firewall upgrades at a Medical Teams non-profit organization. Though simplistic, they made the scope of work clear in everyone's mind.
Diagrams below illustrated a Police Department's initiative for providing officers in patrol vehicles with secure connections to department servers and the Internet through wireless hotspots strategically placed in public buildings around the city.