Banking & payments / Experience note

Modernising enterprise authorisation at scale

A policy-based platform and phased transition for a large enterprise identity environment.

Assignment context: American Express

Banking & paymentsEnterprise systemsIndependent consulting
The challenge: Replace a legacy identity system used by thousands of applications while keeping access secure and disruption low.

The challenge

Enterprise access is deeply embedded in applications and operating processes. Replacing the underlying identity system therefore meant more than building a new service: applications, data and users all needed a safe transition path.

The approach

The assignment covered architecture, design and delivery of a policy-based authorisation platform. A multi-year roadmap broke the transition into measurable stages. Migration and onboarding were sequenced according to risk, with engineering, security, operations and business stakeholders involved throughout.

The value demonstrated

This experience shows how bitswiz.tech approaches modernisation when continuity and security matter as much as the target architecture: make the dependencies visible, reduce transition risk and carry the design through to production.

Technology used in this assignment

Cloud-native architecture · Policy-based authorisation · Data migration

This page describes an independent consulting assignment that informs the work of bitswiz.tech. It does not imply a current client relationship with bitswiz.tech or endorsement by the named organisation.

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