Legacy
Modernization

Delphi to .NET, VB6 to C#, database migrations, and cloud re-platforming for insurance carriers, TPAs, PBMs, and MGAs. Preserve every line of business logic. Zero downtime.

Overview

What Is Legacy Modernization?

JBK is an insurance technology partner that specializes in modernizing legacy systems — taking outdated platforms built on Delphi, VB6, classic ASP.NET, or aging database engines and re-engineering them for modern architectures. We migrate Delphi to .NET 8, convert VB6 codebases to C#, move on-premises databases to SQL Server or PostgreSQL, and re-platform entire insurance operations to Microsoft Azure cloud infrastructure. Every migration is designed to preserve the business logic your organization has refined over decades.

Legacy modernization is not just a technology upgrade. For insurance carriers, TPAs, PBMs, and MGAs, it is a business imperative. Legacy systems slow down claims processing, limit your ability to launch new products, create compliance exposure, and make it nearly impossible to integrate with modern partners and vendors. The talent pool for older technologies like Delphi and VB6 is shrinking every year, driving up maintenance costs and concentrating institutional knowledge in fewer and fewer people.

JBK has been performing legacy modernizations for insurance organizations since 2004, backed by more than 300 in-house developers and a leadership team with over 50 years of combined insurance technology expertise. Our approach is incremental, low-risk, and obsessively focused on business logic preservation — ensuring that every underwriting rule, rating algorithm, regulatory calculation, and operational workflow is identified, documented, migrated, and validated through automated testing at every stage.

What We Deliver

Legacy Modernization Services

Delphi to .NET Migration

Full migration from Delphi and VB6 to modern .NET 8 and C#. We map every form, unit, stored procedure, and business rule to its modern equivalent, then migrate in validated phases with parallel system operation until cutover is confirmed.

Database Modernization

Migrate from FoxPro, Paradox, Access, or unsupported SQL versions to SQL Server, PostgreSQL, or Azure SQL. Schema redesign, data validation, ETL pipeline development, and full audit trail with zero data loss guaranteed.

Cloud Migration

Move on-premises insurance systems to Microsoft Azure cloud infrastructure. We handle infrastructure planning, security configuration, CI/CD pipeline setup, containerization with Docker, and performance optimization for production workloads.

UI/UX Modernization

Replace outdated desktop interfaces with modern, responsive web applications built on Blazor or Angular. Redesigned user experiences for underwriters, adjusters, agents, and policyholders — without rewriting the underlying business logic layer.

API Layer Development

Replace tightly coupled legacy interfaces with modern REST APIs and event-driven architectures. Enable seamless integration with third-party vendors, InsurTech partners, and internal systems through well-documented, versioned API layers.

Incremental Modernization

Not ready for a full rewrite? JBK's incremental modernization approach lets you modernize module by module, wrapping legacy components with modern APIs and replacing subsystems gradually — so your operations never stop and your team adapts at a sustainable pace.

Who It's For

Built for Insurance Organizations on Legacy Platforms

Carriers

Mainframe and Delphi modernization for insurance carriers. Migrate policy administration systems, claims platforms, rating engines, and billing modules to modern .NET and Azure cloud infrastructure — preserving decades of underwriting logic and regulatory compliance rules.

TPAs

Multi-carrier legacy consolidation for third-party administrators. Unify disparate legacy systems into a single modern platform that handles claims intake, eligibility verification, employer group management, and multi-client reporting — eliminating redundant infrastructure and manual workarounds.

PBMs

Pharmacy system upgrades for pharmacy benefit managers. Modernize formulary management tools, prior authorization workflows, pharmacy network portals, and claims adjudication engines from legacy platforms to cloud-native architectures that handle high-volume transactions with real-time performance.

MGAs

Desktop-to-web migration for managing general agents. Replace aging desktop applications with responsive, browser-based platforms that give underwriters, producers, and operations teams secure access to quoting, binding, policy issuance, and commission management from any device.

Technology Stack

Technologies We Use

Proven, enterprise-grade technologies that power our legacy modernization work for insurance clients nationwide.

.NET 8
C#
Blazor
Azure
SQL Server
PostgreSQL
Docker
Angular
Delphi
(source)

FAQ

Frequently Asked Questions

JBK follows a structured Delphi-to-.NET migration process that begins with a full audit of your existing codebase, business rules, and data dependencies. We map every Delphi form, unit, and stored procedure to its modern C# and .NET 8 equivalent, then migrate in phases starting with the most critical modules. Our team preserves all business logic, validates data integrity at every step, and runs parallel systems until cutover is confirmed. Most Delphi-to-.NET migrations for insurance carriers complete in 6 to 18 months depending on system complexity.

Yes. Data preservation is a core requirement of every JBK modernization engagement. We perform comprehensive data mapping between legacy schemas and target architectures, run automated validation scripts to confirm row-level and field-level accuracy, and maintain full audit trails throughout the migration. Historical claims data, policy records, and regulatory filings are all preserved with complete fidelity.

Timelines vary based on system complexity, data volume, and integration count. A focused Delphi-to-.NET migration for a single application typically takes 6 to 12 months. Enterprise-wide modernizations involving multiple systems, database migrations, and cloud re-platforming can take 12 to 24 months. JBK delivers in phased sprints so you see progress and value early, not just at the end.

The biggest risk is doing nothing. Legacy systems become harder and more expensive to maintain every year, with shrinking talent pools and growing compliance exposure. JBK mitigates migration risk through phased delivery, parallel system operation, comprehensive automated testing, and rollback plans at every stage. We have migrated insurance platforms with millions of active policies without data loss or unplanned downtime.

Yes. Phased, incremental modernization is our default approach for enterprise insurance systems. We break the modernization into manageable increments by module, line of business, or functional area so your operations continue uninterrupted. Each phase is independently tested and deployed, reducing risk and allowing your team to adapt to new workflows gradually.

JBK maps every inbound and outbound integration, including EDI feeds, API connections, SFTP transfers, and third-party vendor links, before migration begins. We build adapter layers and API gateways to maintain connectivity during the transition, then migrate integrations to modern REST or event-driven architectures as part of the project. No integration is left behind.

Explore More

Related Capabilities

Ready to Modernize?

Talk to our team about your Delphi, .NET, database, or cloud modernization needs. We will help you scope the right migration plan for your insurance organization.