@startuml left to right direction node "Apple Web Server" <<device>>#PaleTurquoise { node iTunes as iTW <<website>>#LightSalmon { artifact iTuneseSetup.exe <<application>> } node "iTunes Store" as iTS <<website>>#LightSalmon { rectangle "Media Library" } } 'iTW -down- iTS node "Home Computer" as HC <<device>>#LightSalmon { node " " as wb <<web browser>>#LightSalmon rectangle iTunes as iT <<application>>#red rectangle "Media Library" as ML1 #LimeGreen } node "iPhone/iPad/etc." as MD <<mobile device>>#LightSalmon { node "iOS" as MDOS <<OS>>#LightSalmon rectangle "Media Library" as ML2 #LimeGreen } note as N1 Media libraries are synchronized between devices by iTunes end note N1 .. ML1 N1 .. ML2 ' HC *-- ML1 ' HC *-l- wb HC -- MD : USB 'iT .u.> HC iT -- iTS : <<protocol>>\niTunes Store Protocol ' MD *-- MDOS ' MD *-- ML2 wb -- iTW : <<protocol>>\nHTTP MDOS -- iTS : <<wireless protocol>>\niTunes Store Protocol @enduml Submit amiga aws-orange black-knight bluegray blueprint cerulean-outline cerulean crt-amber crt-green cyborg-outline cyborg hacker lightgray mars materia-outline materia metal mimeograph minty plain reddress-darkblue reddress-darkgreen reddress-darkorange reddress-darkred reddress-lightblue reddress-lightgreen reddress-lightorange reddress-lightred sandstone silver sketchy-outline sketchy spacelab spacelab-white superhero-outline superhero toy united vibrant       🎉 Discover the future PlantUML Web Editor! 🚀  PNG  SVG  ASCII Art