Case study · Case study

BMO: Post-Acquisition System Integration

Following the high-profile acquisition of Bank of the West (BOW), BMO needed to synchronize disparate, heterogeneous banking systems into a unified technical ecosystem to ensure brand and operational continuity.

August 14, 2025 · 1 minute

Overview

Following the high-profile acquisition of Bank of the West (BOW), BMO needed to synchronize disparate, heterogeneous banking systems into a unified technical ecosystem to ensure brand and operational continuity.

Challenges

  • Incompatible Data Layers: Divergent tech stacks between the two organizations prevented data liquidity.

  • Operational Silos: Fragmented customer data hindered cross-selling and consolidated financial reporting.

  • Time Sensitivity: Integration needed to be completed rapidly to maintain customer trust during the transition.

Our Approach

  • Custom Adapter Layer: We engineered several specialized data adapters on AWS to bridge the gap between BOW’s legacy data structures and BMO’s core systems.

  • Interoperability Framework: Built a translation layer that allowed real-time communication between heterogeneous systems without a total re-platforming.

  • Data Orchestration: Harmonized disparate schemas into a single source of truth for the newly merged entity.

Results

  • Full Technical Integration achieved 20% ahead of the projected timeline.

  • 45% Reduction in manual data reconciliation efforts.

  • Zero Service Interruptions for BOW or BMO customers during the transition.

Client Feedback

“Integrating an acquisition of this scale is a technical minefield. This team delivered the interoperability we needed without the risks typically associated with a merger.”

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