VServiz

Case Studies

Real-world solutions demonstrating our expertise in cloud migration, database operations, and security compliance for enterprises across Asia-Pacific.

Singapore-Based Expertise

Financial Services

Oracle to Aurora Migration

Complete migration of core banking systems from Oracle Exadata to Amazon Aurora PostgreSQL with zero downtime.

Challenge: A major Southeast Asian bank needed to migrate their 15TB Oracle Exadata data warehouse to a more cost-effective cloud-native solution while maintaining 24/7 availability for critical banking operations.
Solution: We implemented a phased migration using AWS Database Migration Service with change data capture, creating parallel read replicas in Aurora PostgreSQL. Custom schema conversion tools handled complex PL/SQL to PL/pgSQL translation.
Scope: Migration of 200+ database objects, 50+ ETL processes, and integration with existing AWS infrastructure. Performance tuning and security hardening post-migration.
Outcome: 65% reduction in database licensing costs, 40% improvement in query performance for analytical workloads, and successful zero-downtime migration completed over 6 months.
Technologies: Amazon Aurora PostgreSQL AWS DMS Oracle Exadata AWS Lambda

Logistics

SQL Server to Azure SQL

Modernization of logistics tracking and inventory management systems from on-premise SQL Server to Azure SQL Managed Instance.

Challenge: A regional logistics provider with operations across 5 countries needed to consolidate 8 separate SQL Server instances into a unified cloud platform to improve data accessibility and reduce maintenance overhead.
Solution: We designed a hub-and-spoke architecture using Azure SQL Managed Instance with geo-replication for disaster recovery. Implemented Azure Data Factory for ETL pipelines and Power BI for consolidated reporting.
Scope: Migration of 8 SQL Server instances (2012-2019 versions) totaling 12TB, consolidation of 150+ stored procedures, and implementation of row-level security for multi-tenant data separation.
Outcome: Unified data platform reduced reporting latency from hours to minutes, eliminated 70% of manual maintenance tasks, and provided built-in high availability across regions.
Technologies: Azure SQL MI SQL Server Azure Data Factory Power BI

E-Commerce

Multi-Cloud Database Consolidation

Consolidation of fragmented database infrastructure across AWS, GCP, and Azure into a unified Google Cloud Spanner deployment.

Challenge: A fast-growing e-commerce platform had accumulated disparate databases across three cloud providers, leading to data silos, inconsistent performance, and escalating costs from vendor lock-in.
Solution: We architected a consolidation strategy using Google Cloud Spanner as the globally distributed transactional database, with BigQuery for analytics. Implemented change data capture pipelines from all source systems.
Scope: Migration of 25+ databases (Aurora, Cosmos DB, Cloud SQL) totaling 8TB, schema harmonization across 300+ tables, and implementation of global consistency for inventory and order management.
Outcome: Achieved 99.999% availability during peak sales events, reduced database costs by 45% through consolidation, and enabled real-time inventory visibility across all regions.
Technologies: Google Cloud Spanner BigQuery AWS Aurora Azure Cosmos DB

Fintech Startup

Security & Compliance Review

Comprehensive security assessment and compliance remediation for a Series B fintech startup preparing for MAS regulatory approval.

Challenge: A digital payments startup needed to achieve MAS Technology Risk Management (TRM) compliance before launching regulated services, but had limited in-house security expertise and fragmented cloud security controls.
Solution: We conducted a full-stack security assessment across AWS infrastructure, application code, and data handling processes. Implemented security controls, encryption standards, and audit logging aligned with MAS TRM guidelines.
Scope: Assessment of 50+ AWS resources, code review of 200k+ lines across microservices, penetration testing, and development of incident response procedures. Training for development teams on secure coding practices.
Outcome: Successfully achieved MAS TRM compliance within 4 months, identified and remediated 15 critical security vulnerabilities, and established ongoing security monitoring processes that reduced mean time to detection by 80%.
Technologies: AWS Security Hub WAF & Shield PostgreSQL Encryption CloudTrail

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