Legacy Systems Modernization

Alexis Information Systems modernizes and integrates legacy business systems for organizations that require continuity, compliance, and readiness for future technology. Our approach preserves the value of existing investments while enabling new capabilities through automation, secure data exchange, and application redevelopment. Projects range from extending mature systems to designing intelligent, AI-ready platforms that support current and future operations.

Programming & Development Expertise

Our development experience spans legacy languages, modern web technologies, and integration frameworks. This allows us to bridge older systems with current architectures without losing business logic that remains valuable. Development work emphasizes clean structure, security, and support for future changes. Code and integrations are documented for technical teams, auditors, and leadership stakeholders.

Key Development Capabilities

  • Custom coding and API development for system-to-system integration
  • JavaScript and modern scripting for interactive web and application interfaces
  • PHP and framework-based web development for business applications
  • SQL, MariaDB, and database optimization for performance and reliability
  • Architecture planning for AI-ready and data-driven solutions
  • Section 508 accessibility compliance for public-facing and internal systems.

 

Legacy System Proficiency

Many enterprises and government agencies still rely on core applications built in earlier generations of technology. We support and modernize these systems while creating a clear path forward.

Modernization work focuses on data integrity, code security, and interoperability between existing applications and modern web or cloud environments. This includes planning for gradual migration, phased replacement, or strategic extension of high-value systems.

Tax calculation and compliance processing across multiple jurisdictions

Legacy Technologies Supported

  • Visual Basic / VB.NET
  • C#
  • Microsoft Access data systems
  • Microsoft Great Plains and Dynamics integrations
  • Classic ASP and PHP
  • Excel VBA automation and complex scripting
  • On-premise SQL Server and ODBC data exchange.

Why Organizations Choose Our Modernization Approach

  • Experience extending and modernizing mission-critical legacy applications without unnecessary disruption
  • Ability to connect legacy databases, cloud platforms, and third-party systems into unified workflows
  • Operational automation across finance, HR, inventory, and data reporting functions
  • Design aligned with security, compliance, and accessibility requirements for enterprise and government use
  • Focus on creating AI-ready, data-aware environments for future analytics and automation initiatives.