Application Development Migration: From Legacy Integrations to Scalable Architecture

Objective

A healthcare technology provided needed to replace its Salesforce-dependent integration framework with a scalable, event-driven architecture within its new service portal.

Their mission-critical integrations and robotic process automation (RPA) workflows, supporting 40 agencies processing approximately 16,000–17,000+ records daily, needed to be migrated while maintaining uninterrupted operations.

The initiative focused on: Migrating RPA integrations with full functional parity, enabling scalable, real-time communication using GCP Pub/Sub and Azure Service Bus, maintaining uninterrupted operations through a dual-environment transition model, and establishing a repeatable migration strategy for onboarding agencies.

Complex integrated systems

Challenge

The migration effort required transforming a deeply embedded Salesforce ecosystem without disrupting daily operations at scale. The legacy solution had been in place and processing at scale for over 5 years.

Key challenges included:

  • RPA workflows were tightly integrated with Salesforce APIs, requiring precise replication
  • Systems supported 40+ agencies with significant daily processing, leaving little room for disruption
  • Differences in schema and data structures required careful translation and validation
  • Project timelines evolved, requiring rapid adaptation and re-baselining
  • Migration spanned architecture, infrastructure, and phased agency onboarding

Solution

NLP Logix delivered a structured, multi-phase approach aligned to discovery insights and a scalable architecture strategy.

  • Discovery & Migration Strategy: This foundation ensured alignment across stakeholders and reduced downstream risk.
  • Architecture Modernization: Replaced Salesforce APIs with new service portal’s native integrations, implemented event-driven communication using Azure Service Bus and GCP Pub/Sub, establishing secure connectivity across cloud environments, and introduced additional monitoring capabilities, including logging, health dashboards, and error handling.
  • Parallel Workflow Implementation: Replicated RPA workflows within the new service provider while maintaining Salesforce operations, validated data translation and system interoperability, and ensured feature parity prior to migration.
  • Phased Agency Migration: Began with lower-volume agencies to refine process and validate stability, scaled migration across 40 agencies using a repeatable model, and maintained data integrity and processing continuity throughout.
  • Program Governance & Execution: Defined communication cadences for executive, project, and technical stakeholders, monitored progress, risks, and dependencies continuously, and enabled rapid issue resolution through cross-functional coordination.
Application Development Solution

Results

The portal migration successfully delivered a scalable, future-ready platform while maintaining business continuity across a high-volume operational environment.

  • 40 agencies successfully migrated using a phased, low-risk approach
  • 16,000–17,000 average daily records sustained during transition with no major service disruption
  • Modern, event-driven architecture deployed across cloud environments
  • Improved system scalability and flexibility for future growth
  • Enhanced monitoring and reliability through integrated logging and health dashboards
  • Repeatable migration framework established for future onboarding and expansion
Tech Stack Image

Tech Stack

  • C#/.NET
  • Azure Functions
  • Azure Service Bus
  • GCP Pub/Sub
  • Avro Schema Validation
  • Terraform/HCL
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