FRANKFURT — Deutsche Bank is stepping up its effort to modernise its retail banking technology, marking a key milestone in a multi-year overhaul aimed at replacing decades of complex legacy systems — and preventing a repeat of the costly technology failures that frustrated customers in the past.
Germany’s largest lender said it has selected a new core banking platform as part of plans to dramatically simplify its technology infrastructure, reducing the number of core systems used in its retail division from 15 to just two.
The bank has chosen Vault Core, a platform developed by fintech company Thought Machine, for the transformation. Core banking systems sit at the heart of a bank’s operations, powering products and services used by millions of customers.
Deutsche Bank described the move as an important step in its long-term technology transformation, but the overhaul comes with high stakes.
A Major Reset After Past Technology Problems
The push to modernise the bank’s systems follows previous technology setbacks, including the troubled integration of Postbank. That episode triggered widespread customer complaints, with some users reporting difficulties accessing their accounts and reaching customer service.
The latest move signals that Deutsche Bank is now attempting something far more ambitious: simplifying a patchwork of aging systems while building a more flexible digital infrastructure for the future. The bank has previously outlined a broader technology strategy focused on strengthening in-house engineering capabilities, expanding cloud-based services and eliminating redundant systems across its businesses.
Why the Technology Overhaul Matters
For major banks, replacing core technology is notoriously difficult. The systems must continue processing transactions and supporting customers while new infrastructure is introduced — making large-scale migrations both expensive and operationally risky.
But the potential rewards are significant. A simpler technology architecture could help Deutsche Bank launch products faster, reduce operating complexity and improve digital services for retail customers.
The overhaul is also part of a wider effort by the lender to improve efficiency while investing in areas that support future growth. In its latest financial results, Deutsche Bank said it was continuing to simplify the operating model of its Private Bank while making targeted investments in technology and front-to-back capabilities.
A Stronger Business — But Technology Remains a Critical Test
The technology transformation comes as Deutsche Bank’s Private Bank has shown signs of operational momentum. The division reported sustained revenue growth and client assets of €846 billion in the second quarter of 2026, while the wider bank posted a record quarterly post-tax profit of €1.9 billion.
That gives the lender more financial breathing room to invest in modernisation. However, successfully executing the technology migration will be crucial, particularly after the reputational damage caused by earlier disruptions.
Deutsche Bank has also been expanding its use of modern technology across the organisation, including cloud infrastructure and artificial intelligence initiatives. The challenge now is whether the bank can turn those investments into a smoother, more resilient banking experience for customers.
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