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Thomson Reuters

Data Lake / Data Warehouse Modernization · Real-time Analytics · Security and Compliance · System Migration

Thomson Reuters ONESOURCE, which calculates over 10 billion tax transactions per year representing more than $23 trillion of economic value across 60,000+ taxing jurisdictions in 205+ countries, faced rising IT maintenance burden on on-premises platforms that limited availability, scalability, and security for sensitive customer financial data.

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$23 trillion of economic value processed
10+ billion tax transactions calculated per year
205+ countries and territories
6 to 12 hours per month of downtime eliminated

Solution

Thomson Reuters ONESOURCE, a unified indirect tax engine processing 10B+ tax transactions annually representing $23 trillion of economic value across 60K+ global taxing jurisdictions, migrated to Oracle Autonomous Transaction Processing on Oracle Cloud Infrastructure to achieve millisecond transaction latency, zero downtime for patches and content updates, and automatic scaling during peak demand periods (Black Friday, Cyber Monday). Integration with Oracle Fusion Cloud ERP enabled tax calculations grounded in invoice-level financial data for improved accuracy and faster compliance reporting globally.

Data flow

Transactional data from 60K+ jurisdictions and 205+ countries flows into ONESOURCE → Oracle Autonomous Transaction Processing calculates tax liabilities in milliseconds → results posted to Oracle Fusion Cloud ERP for accounting → GoldenGate replicates to disaster recovery systems.

Solution architecture

5 components · 4 layers
  1. Compute
    • OCI Kubernetes Engine Container orchestration for flexible deployment of ONESOURCE application services and microservices.
  2. Storage
    • Oracle Autonomous Transaction Processing Processes 10B+ tax transactions annually with millisecond latency; auto-scales during peak periods; eliminates 6–12 hours of monthly patching downtime.
    • Oracle Fusion Cloud ERP Financial integration; connects tax calculations at invoice level for accurate and timely tax liability recording.
  3. Serving
    • OCI Functions Serverless compute for event-driven tax calculation workflows and API integrations.
  4. Orchestration
    • Oracle GoldenGate Real-time replication of production databases to secondary systems for critical backup and disaster recovery.

Architecture clues

  • Autonomous Transaction Processing for OLTP
  • Cloud Lift Services for planning, architecting, and testing
  • Native deployment of ONESOURCE on OCI
  • OCI GoldenGate for real-time production DB replication and DR
  • OCI Kubernetes Engine and OCI Functions for scalability and event handling
  • Oracle Data Safe and Oracle Cloud Guard for unified security insights

Evidence from the source

Oracle Autonomous Database provides autoscaling, self-tuning, self-repairing, and self-encryption, so we have zero downtime to securely process critical financial transactions.
Thomson Reuters ONESOURCE calculates, collects, and reports on more than 10 billion tax transactions a year, representing over $23 trillion of economic value.
Thomson Reuters also eliminated the roughly 6 to 12 hours per month of downtime previously needed for patching and updating transactional on-premises environments.

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