In a method for communicating between a number of first services and a number of second services. The number of first services belongs to a service-oriented architecture, in which a respective first service is provided by messages based on a question-answer mechanism by a first protocol. The number of second services belongs to a data-based architecture, in which second services can be switched together by a second protocol. The second protocol specifies data input and data output of the second service and transfers the data between the second services. A message of a first service, entering into the service converter, is converted into data input of a second service associated with the first service and/or data output of a second service, entering into the service converter is converted into a message emitted by the service converter, of a first service associated with the second service.