Oversight Systems, headquartered in Atlanta, Georgia, delivers real-time insights into financial and operational transactions, helping clients detect anomalies, identify root causes, and act confidently, powered by a growing suite of AI capabilities.
To support growing demand for intelligent automation, Oversight engaged Nagarro to reimagine its infrastructure for elasticity, performance, and long-term innovation velocity.

 

 

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As Oversight scales its business to continue supporting larger enterprise clients and increasingly complex datasets, its existing infrastructure demanded an upgrade. They onboarded Nagarro to modernize its SaaS platform and move Oversight's system to a more flexible AWS cloud set up. Nagarro further integrated Databricks into Oversight’s ecosystem for advanced data analytics.

Nagarro closed the migration cycle for one business unit, delivering improved performance, enhanced scalability and streamlined platform operations. The transition to an enterprise-grade platform for another business unit is currently underway.

the challenge

Oversight’s platform analyzes millions of financial transactions annually, flagging patterns of fraud, waste, and misuse across T&E, P2P, and vendor spend. As demand grew and Oversight expanded into larger global enterprise accounts, the company needed to modernize its data infrastructure to meet rising client expectations for speed, scale, and accuracy.

Key transformation drivers included:

  • Greater data variety from ERP systems, card feeds, spend data, and more
  • Demand for near real-time insights across finance workflows
  • Increasing AI workloads that score, classify, and prioritize risk in dynamic business environments
  • Need for platform flexibility to support faster innovation and reduce operational overhead

Oversight needed to scale on a modern, cloud-native backbone to support intelligent automation at enterprise-grade scale without interrupting day-to-day operations.

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the solution

Oversight partnered with Nagarro to modernize its legacy infrastructure and build a scalable, cloud-native platform from the ground up.

The engagement began with a focused MVP to demonstrate measurable performance improvements, which cleared the path for a full-platform transformation.

Now, Nagarro is migrating Oversight’s on-premises systems entirely to AWS, redesigning the architecture for elasticity, speed, and efficiency.

Together, Oversight planned to migrate several terabytes of data and hundreds of clients to a high-performance, multi-tenant cloud environment.

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The transformation addresses six key architectural pillars

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Cloud migration to AWS 

A phased migration plan moved Oversight’s infrastructure to AWS, setting the stage for greater performance and agility.

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Multi-tenancy enablement

We re-architected the platform to support multiple clients on a shared infrastructure, while keeping data securely isolated. This design laid the foundation for efficient scaling and streamlined client management.

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Stateless architecture

By eliminating server-side state, the new system allows any server to handle any request. It boosts fault tolerance and enables seamless load distribution across environments.

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Horizontal scalability

The combination of stateless services and containerized deployment enabled Oversight to scale horizontally by adding servers to meet demand, rather than relying on expensive vertical scaling.

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Database modernization

We replaced the costly Oracle databases with PostgreSQL. All application code and data queries were refactored to suit the new environment, boosting both cost efficiency and performance.

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Advanced analytics with Databricks

To enhance Oversight’s data capabilities, we integrated Databricks into the stack. Its distributed compute architecture allowed for parallel data processing at massive scale, accelerating insights and enabling Oversight to handle data-intensive workloads with ease

the impact

Through close collaboration between Oversight and AWS, Nagarro conceptualized the project plan within a tight timeline. We completed the migration for one of the business units, which now operates a fully cloud-native, multi-tenant platform on AWS.

The business unit has experienced a significant and lasting impact on the business, improving agility, reducing operational complexity, and enabling the platform to handle data-heavy workloads from enterprise clients confidently. These outcomes reflect the current operational state and may evolve over time

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Cost optimized growth 

The migration to the public cloud and platform modernization optimized infrastructure operations and improved long-term scalability, supporting sustainable growth.

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Faster, simpler client onboarding 

A simpler, more efficient, and configuration-driven onboarding process improved readiness for high-volume workloads, accelerated time-to-value, and reduced customer onboarding time by half.

 

 

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Performance at scale 

A future-ready architecture designed for consistent and reliable growth that effortlessly supports the current enterprise-grade clients around the globe, as well as their future expansion. Oversight’s run-time performance for key processes was reduced by nearly half.

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Faster insights

Data processing time for large clients significantly improved, enhancing analytics speed and the user experience.

 

A strategic partnership for scalable innovation

Oversight’s collaboration with Nagarro and AWS continues to push the boundaries of what AI-powered spend management platforms can deliver. By future-proofing its infrastructure, Oversight is empowering its clients to act with greater confidence, speed, and precision.