The solution architecture creates the basis for the implementation of the system.

The following outcomes are produced:

1. The system concept
   creates the basis for and supplements the solution architecture. It describes solution concepts for specific issues (e.g. user administration and access rights, archiving).
2. The solution architecture
   describes the system with its components and its structure, as well as the interfaces with peripheral systems. The solution architecture also describes the relationship between the IT architecture and the business processes.

In the system concept, several solution approaches are established and evaluated. The selected approaches are combined in the solution architecture to form a comprehensive solution.

The system concept is based directly on the solution requirements, on any organizational requirements, and on the study. It goes into more depth about the solution option described and selected in the study. Several subject-specific system concepts can be developed, each with different solution approaches.

The solution architecture is based on the system concept and forms the basis for the decision on solution architecture. It is fleshed out further in the course of solution development.

1. Study
2. Solution requirements
3. Organizational requirements
4. Prototype realized

1. Create system concepts.
2. Prepare solution architecture.
3. Integrate solution concepts into the solution architecture or reference them as appendices.
4. Check the solution architecture with prototypes as needed.
5. Coordinate the outcomes with the stakeholders.

1. System concept
2. Solution architecture