Many different systems are in operation in a bank’s IT landscape. To some extent, they are interconnected via interfaces and use various programming languages. In view of this, changes are difficult to implement. It takes a lot of investment to keep this type of system, which has developed over time, in operation or to replace it with a completely new system. We would like to recommend a third option. Our project approach ‘Continuous Renewal’ facilitates a smooth changeover. We use state-of-the-art technologies to provide software modules that only upgrade and enhance individual sectors, if necessary.