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Modernization through API-driven entitlements

Altimetrik helps a U.S. bank modernize entitlement management with low-code API management tool FastAPI, reducing API design time and boosting system performance.

February 11, 2026
5 minute read
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Summary

The client sought to replace its aging mainframe system with a modern, efficient entitlement management solution. Altimetrik implemented its proprietary cloud-agnostic low-code API management tool FastAPI to streamline API development, which reduced design time by 50% and ensured optimized performance while integrating the bank’s existing applications.

The Challenge

  • The client needed to phase out its legacy mainframe system while maintaining robust entitlement management.
  • Heavy reliance on legacy systems and manual API design processes were time consuming and inefficient, hindering the client’s ability to innovate and meet customer demands.
  • Integration across multiple channel applications required a flexible and scalable solution.
  • Ensuring API performance within strict latency requirements was a critical concern.

The Solution

FastAPI tool for optimized entitlement management

  • Implemented FastAPI technology for reducing the API design time
  • It converted the core entitlement functions into a set of APIs, ensuring seamless integration with channel applications.
  • Leveraging a rule engine, it managed API routing, access levels and integration rules, providing a flexible and highly scalable solution.
  • Enabled integration with multiple applications and the bank’s standardized rule engine, ensuring seamless operation across their ecosystem.

Business Impact

  • 50-60% Faster API design for accelerated project timelines.
  • 30-40 Milliseconds of response time achieved, meeting stringent performance requirements.
  • 40-50 APIs seamlessly integrated with customer’s channel applications

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