Enterprise Transformation at Industry-Leading Financial Services and Data Processing Provider
The Customer
A U.S.-based financial services and data processing enterprise.
The Challenge
The customer sought to modernize their highly complex, monolithic legacy application consisting of over 50 million lines of code written in COBOL, Assembler, JCL, and Easytrieve, by rewriting it in Java. This ambitious transformation required detailed analysis and extraction of core business rules, clear prioritization of application components, and a manageable modernization roadmap to transition successfully to a cloud-native, AWS-optimized architecture.
The Approach
Leveraging the powerful capabilities of the AveriSource Platform, the customer was able to immediately gain actionable insights into their extensive legacy portfolio. The platform provided critical intelligence and documentation to inform strategic modernization decisions and enabled an Accelerated Rewrite of prioritized application components through precise business rule definition, code analysis, and automated refactoring.
Discover
Using AveriSource Discover, the customer captured a comprehensive understanding of the existing application estate. This included mapping the full application architecture, identifying data sources and lineage, and analyzing the complex web of connections, dependencies, and interrelationships across the entire legacy ecosystem.
Product Reports and Features Utilized:
- Application Overview
- Connections
- Clusters
- Data Lineage
- Data Source File Mapping
- Dependencies
Analyze
Using AveriSource Analyze, the enterprise rapidly identified, analyzed, and extracted essential business rules. This process significantly improved overall code quality, reduced technical debt, and produced detailed use cases and requirements documentation. These deliverables directly informed and accelerated the modernization of the mainframe application toward a modern, Java-based architecture.
Product Reports and Features Utilized:
- Accelerated Rewrite
- Business Rules Extraction
- Code Analysis
- Rule Analysis
- Technical Debt Reduction
- Code Quality
Transform
Using AveriSource Transform’s hybrid modernization capabilities, the customer strategically targeted specific business logic for accelerated rewriting, while employing automated refactoring for selected COBOL, Assembler, and JCL code that needed to retain functional equivalence, converting it directly to Java optimized for AWS. The platform enabled the decomposition of their monolithic legacy application, allowing the customer to begin converting prioritized portions of the codebase into AWS-targeted microservices. AveriSource streamlined complex refactoring tasks, significantly reducing manual effort, lowering technical risk, and increasing productivity. Simultaneously, the accelerated rewrite was guided by precise business rule extraction powered by insights from Discover and Analyze, ensuring strategic alignment, informed decision-making, and clarity throughout the modernization process. By adopting this hybrid modernization approach, the enterprise effectively began transitioning its extensive legacy codebase into a modern, scalable, and cloud-optimized microservices architecture on AWS infrastructure.
The Results
Ultimately, the AveriSource Platform enabled the customer to dramatically accelerate their modernization initiative toward Java microservices running on AWS infrastructure, delivering the following outcomes:
- 50,000,000+ lines of legacy code (COBOL, Assembler, JCL, Easytrieve) were analyzed, including business rules extraction and code quality improvements
- 95% cost reduction over manual efforts
- 300% improvement in productivity and efficiency
- 500% acceleration of business rules requirements
Additionally, AveriSource was the only ISV ever able to successfully analyze this highly complex legacy application, making this modernization initiative uniquely achievable for the customer.
