c4-banking-system.puml

@startuml
!include ../src/c4.puml

title Banking system
caption This is the Banking System example taken from https://c4model.com/

rectangle email_system <<External System>> [
    **E-mail system**

    The internal Microsoft Exchange
    e-mail system
]

together {
    actor "Personal Banking \nCustomer" <<Internal Person>> as customer

    rectangle internet_banking <<System>> [
        **Internet Banking System**

        Allows customers to view
        information about their bank,
        accounts and make payments
    ]

    rectangle mfb <<External System>> [
        **Mainframe Banking System**

        Allows customers to view
        information about their bank
        accounts and make payments
    ]
}

customer          .down.> internet_banking  : uses
internet_banking  .down.> mfb               : uses
internet_banking .right.> email_system      : send e-mails\nusing

email_system          ..> customer          : send e-mails to

@enduml