Case Study: Top-tier Nordic Banks achieve trusted customer-data reconciliation with 20 Thousand Leagues Advisory

Top-tier Nordic Banks achieve a single signed-off customer-population breakdown with 20 Thousand Leagues in 4 years

The customer, a top-tier Nordic bank, faced significant data trust issues, with leadership receiving conflicting answers from different departments and unable to trust their dashboards or BI reports. This lack of a single source of truth and clear data lineage hampered decision-making. To address this, the bank engaged 20 Thousand Leagues Advisory for a depth check and analysis of their complex legacy payments estate.

20 Thousand Leagues Advisory provided an independent analysis that reconciled customer definitions across legal, compliance, audit, and technology, and aligned the estate with PSD2 and PCI-DSS requirements. The solution delivered a single signed-off customer population breakdown and a single coherent PSD2 trajectory, providing the bank's leadership with one defendable answer and restoring trust in their data.