We create clarity and shape the future of business-critical software systems.
With eXplain from PKS, we were able to remove a considerable amount of code that was no longer required in our Natural and Cobol-based core banking system. eXplain enabled us to fundamentally clean up and purge the system. The documentation created fully automatically by eXplain also comprehensively meets our audit requirements. These are just two examples of how eXplain supports us in our project „stabilization of the core banking system”. I would also like to emphasize the extremely pleasant cooperation with the competent team at PKS as well as the flexible possibilities in everyday project work. Helaba-specific requirements could be taken into consideration at any time.
The initial situation
As a stable backbone of Helaba it has always performed well and is currently supported by a team of 10 internal and 5 external developers. However, due to strategic considerations, the replacement of the core banking system with SAP standard software was tackled in 2016. The prevailing complexity in the system, with over 3,000 interfaces and incomplete technical and specialist documentation, was the reason why the cost of the changeover had to be put in the three-digit million range.
After only a short time, the implementation project had to be postponed to 2017 due to higher-priority regulatory project plans. At the same time, there were regulatory requirements which resulted in an acute need for action in the inventory system.
Complication and challenges
One of the most important findings was also that the step-by-step changeover to a new system, which is considered realistic, will only be possible if the existing system is simplified in terms of complexity and the over 3,000 interfaces are massively reduced or structured.
The pain points were obvious:
How to get an overview of the legacy system?
How to build up new resources to manage ongoing operations and the transition phase of 5-7 years?
How can complexity be reduced and a component-based migration to the new system be made?
The Helaba project team found central support for the solution of the problem in eXplain and in cooperation with PKS.
eXplain helps to create transparency, to penetrate the core banking system technically and professionally and thus to open up essential possibilities for the future
Establish a roadmap for stabilising the core banking system
Perform supporting analyses of data flow and object usage
Identify interfaces between the applications
To document the application interfaces with DV documentation in an audit-proof way
Simply transfer knowledge to new employees
Prepare a changeover in the best possible way, so that it can be carried out at low risk and at optimal cost
Helaba‘s requirements for eXplain were demanding and the core banking application and its interfaces very complex. Once again, we have shown that our innovative analysis technology can also optimally cover customer-specific features. The feedback on the utility value of eXplain was already clear during the introductory event, so a rollout is now planned for the entire team.
The advantages for the customer
Tools / Procedure
- Proof of Concept
- Complexity Survey
- Cleanup and Bereinigung
- Training and Coaching