Describing an Application System
A project for describing the functional architecture of an information system is also used to inventory the existing application systems and their interactions.
An application system is an assembly of other application systems, applications and end users interacting with application components to implement one or several functions.An application system is described by several types of diagrams:
• An application structure diagram is used to represent the service interactions between the application components using service interfaces.
For more details, see Creating an application system structure diagram.• An Application System Deployment Architecture. used to represent the technical architecture chosen for the deployment of each component that support the application system as well as the techniques used for their communications .
For more details, see Describing an Application System Deployment Architecture.• A scenario of application system flows presents the flows exchanged between the application systems, the applications or the microservices used by this application system. A scenario can represent a particular use case of the application system or more globally all the flows exchanged within this application system.
For more details, see Using a Scenario of Application System Flows.• Scenario of sequence of flows presents the agents necessary for the scenario (IT services, microservices, data stores) and exchanged sequenced application flows.
For more details, see Using a flow scenario sequence diagram.