150+ SQL Server Databases to PostgreSQL within 2 months: A Cognizant–HexaCluster Healthcare Success Story

Rahul Jain - Director, Professional Services, Cognizant will share how, as a hands-on technical leader, he identified likely failure points upfront, proactively put guardrails in place, and bridged the gap between technical execution and executive alignment across a complex Pega + enterprise application ecosystem.

We’ll also dive into the practical realities teams face when moving from SQL Server to PostgreSQL - especially the early challenges in understanding behavioral and standards-related differences. We’ll cover how educating application developers on PostgreSQL’s stricter SQL interpretation and strong adherence to ANSI/SQL principles becomes essential to avoid surprises and accelerate confidence.

From HexaCluster, Avinash Vallarapu (Founder & CEO) will share how HexaRocket enabled a repeatable, automation-first migration platform with a guided UI, handling end-to-end database modernization seamlessly - including schema conversion, high-speed data migration, validation, and change data capture (CDC), to reduce downtime and risk.

Finally, because healthcare modernization is inseparable from security, we’ll discuss how security and compliance were foundational to the program. HexaRocket underwent careful scrutiny and detailed assessment by the customer’s security team. We’ll share practical takeaways from that process, covering deployment architecture, authentication and encryption techniques, and data protection controls commonly required for migrations involving PHI and federal data environments.