Nowadays the enterprise architecture (EA) presents the foundation for a successful management of complex business systems, of which also the bank information systems are a part of. The concepts of business and IT architectures in banking IT systems are a novelty in Slovenia, as well as in other countries. In order to manage their business systems and reduce system costs, banks will have to begin laying foundations represented by the business IT architecture. One of the new areas constantly expanding in banking is the SEPA area. A part of the SEPA area is represented by the SEPA Direct Debit (SDD). The SDD orders are a payment service, in which the payee orders a payment transaction to be debited to their account on the basis of a predetermined consensus with the payer. This area of processing is not limited to the national level and is uniform in the entire SEPA EU area.
The introductory part of the thesis presents a brief insight into the EA methodology and describes various aspects and perspectives of the researched field. Also, a detailed description of the methodology and the framework ArchiMate is included, with which the case study in the field of SEPA direct debits was carried out. Briefly, a possible integration of the designed models with the models of business process modelling (BPMN) and UML is discussed.
In the last part of the thesis, the variety of EA models designed especially for this particular field is presented. The actors have been analyzed and consequently the business-IT architecture has begun to show its shape. The models have been applied to the three areas of the used methodology: business, application and technology. During the modelling stage, the basis for further extensions to other areas of business have been laid. The models were modelled in the tool Archi and the framework ArchiMate, the latter being the most modern at this moment. With the constructed case study and the concept presentation we confirmed the complexity of the field, and that the designed models are not an end in themselves, but help showcase different aspects to individual actors, and enable them to be aware of their impact on the business. The designed models allow the bank to react more quickly to the market changes, they especially enhance their ability to affect the changes in the current situation. Application-wise, the developed models can serve as a tool, with which the existing banking IT systems may be analyzed in terms of their efficiency. Also, the analytical technique is described, and suggestions for a more effective and simpler IT system are provided.
With the developed models we built concept that can serve as a basis for an extension to the entire banking system.