CASE STUDY

Reconciling a data migration with Bragi

How Bragi facilitated a data migration for a private bank, helping the bank achieve a smooth transition to its modern cloud platform.

LoB systems and Bragi

Trusted for regulated and high‑stakes data:








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Cut reconciliation time from hours to minutes
Automated reconciliation replaced manual spreadsheet checks, cutting validation time and freeing the team to focus on testing and exception handling.
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10-minute reconciliation cycles
Each data migration cycle was independently validated and reported within 10 minutes, increasing accuracy, speed, and enabling completion within strict migration windows.
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Proven data integrity & regulatory confidence
Bragi’s audit-ready reconciliation and traceability reports increased business confidence in the quality and completeness of migrated data.

Modernising a 200-year-old private bank

This project focused on verifying a major migration from a legacy banking platform into a modern cloud-based system. A third-party vendor handled the actual data transfer; Bragi’s job was to independently reconcile what landed.

Source: Legacy core banking platform

Destination: New cloud-based banking platform

Bragi in the middle:

  • Extracts data from both systems

  • Applies the same transformation logic

  • Reconciles key entities and balances

  • Produces audit-ready reports and exception lists

About the client

A private bank with more than 200 years’ heritage, providing bespoke banking and investment services to high-net-worth individuals, families, and trusts. Operating under Guernsey’s regulatory framework, the bank offers deposit accounts, lending, credit, FX, and comprehensive investment and asset management services.

The challenge

The bank needed to migrate from a legacy banking platform to a modern cloud-based platform, involving extensive transformation rules and data mappings.

Bragi’s role was to verify and reconcile the data once it had been migrated.

This independent validation step had to:

  • Ensure data integrity and completeness for every cycle

  • Prove robustness to satisfy the regulator

  • Fit within tight migration windows

  • Allow business owners (not just IT) to maintain mappings and transformations

Implementation with Bragi

Bragi automated the reconciliation between the legacy platform and the new cloud system.

Each migration cycle was checked end‑to‑end, with discrepancies surfaced as exceptions instead of hidden in spreadsheets, turning validation into a fast, repeatable process.

Is this relevant to you?

This case study is especially useful if you are:

  • Planning or running a core platform migration

  • Needing independent validation of migrated data

  • Juggling complex mappings ans regulatory scrutiny

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