As financial institutions continue to modernise their data infrastructure, the risks surrounding large-scale cloud migrations are increasingly under scrutiny. Calimere Point recently delivered the data assurance strategy behind one of the most complex projects in the European financial sector: the successful migration of over 12 billion regulated transaction records for a Tier 1 global financial institution operating under MiFID II.
The firm had initiated a transformation programme to move its post-trade reporting data from legacy SQL infrastructure to a modern cloud platform. The objective was twofold: to reduce the technical debt and cost associated with legacy systems, and to enable the launch of a new analytics-driven product for clients. However, with such a large historical dataset and a heavy compliance mandate, the migration carried significant operational and regulatory risk.
A Complex Challenge Requiring Precision
The client’s transaction reporting platform processes and stores data that is both deeply sensitive and subject to strict regulatory scrutiny. Ensuring complete data fidelity during migration — down to every attribute and across a five-year record history — was a non-negotiable requirement. Any data mismatch could impact regulatory reporting, client trust, or the integrity of the firm’s new analytics product.
Calimere Point was brought in to lead the assurance framework underpinning the migration. Drawing on years of experience in financial data transformation and its partnership with Precisely, Calimere Point deployed Data360 Analyze to build a validation architecture tailored specifically to the demands of the project.
Assurance at Scale, Without Compromise
Using Data360 Analyze, Calimere Point created a high-precision, high-granularity reconciliation layer that allowed the client to validate:
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Record and volume completeness across source and target systems
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Attribute-level consistency for every transaction
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Root causes of anomalies using automated pattern recognition
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Potential risks via “what-if” scenario testing before final cutover
This framework ensured the internal migration team could confidently identify and address inconsistencies before they became systemic, saving months of manual QA effort and accelerating the project timeline.
Three Key Lessons from the Engagement
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Assurance isn’t a phase — it’s an architecture.
Embedding assurance into the design and planning stages changes the risk profile of a migration entirely. -
Tooling matters.
Generic ETL or manual spot-checking can’t deliver the precision required for regulatory datasets. -
Granularity beats assumptions.
Every record, every field must align. Precision validation gives you visibility, control, and trust in the outcome.
A Blueprint for Cloud Transformation in Financial Services
This project offers a blueprint for other financial firms undertaking large-scale migrations. With the right tools and expertise, it’s possible to move legacy infrastructure into the cloud without compromising compliance or control — and to unlock new value from historical data in the process.
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Explore how Calimere Point helped one of Europe’s top financial institutions deliver a safe, efficient, and regulator-ready cloud migration.
