@startuml ' Definition der Akteure (Benutzer) node Browser as Browser1 actor Benutzer as user ' Definition der Fremdsysteme node "Fremdsystem (Open Source)" as ExternalSystem1 node "Fremdsystem (zugekauft)" as ExternalSystem2 node "Fremdsystem (zugekauft)" as ExternalSystem3 ' Definition des zentralen Systems node "Hauptsystem" <<system>> { [Forum] as HS } ' Interaktionen zwischen Benutzern und dem System user -right-> Browser1 : " nutzt" Browser1 -down-> HS : " HTTPS" ' Interaktionen zwischen Fremdsystemen und dem System HS -left-> ExternalSystem1 : "HTTPS " HS -right-> ExternalSystem2 : " HTTPS" ExternalSystem3 <-up- HS : " SMTP" @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