Imagem banco desktop Imagem banco mobile

Success Case: Automated Modernization of Legacy Systems in a Large Bank

The Challenge: A Sleeping Giant

One of the largest banks in Brazil needed to modernize its critical infrastructure without losing data integrity or halting its operations. The project involved:

  • More than 20 million lines of COBOL/ADSO code
  • Over 100 billion records in IDMS databases
  • Systems operating in mission-critical environments, where any failure would have a direct business impact.
And the most challenging part: all of this had to be done automatically, in compliance with the strict criteria of the contract.

The TTY2000 Solution: proprietary technology, precision, and methodology

TTY was chosen for its proven capability in automated conversion and excellent delivery. Here's how we did it:

Proprietary Tool IVA2000: the heart of the project
  • Extraction of hierarchical structure (IDMS) and generation of relational model (DB2)
  • Automated creation of data extractors and load scripts
  • Automated code conversion: from ADS/COBOL to CICS/COBOL, already integrated with the new relational database
Robust proof of concept
  • Real environment with DB2, IDMS, and CICS
  • Execution of real tests: registrations, queries, histories
  • Active participation of specialists from the bank and TTY
Rigorous validations and testing
  • Comparison between original and converted environments
  • Validation of usability, business logic, and data quality
  • Generation of technical evidence and manual code validations

Results that prove technical capability and delivery

Complete migration of IDMS data to DB2 with validated integrity

Program conversion preserving logic and user experience

Zero impact on user area: no retraining required

Code generated with readability and adherence to client standards

Tests without critical failures: proven stability

Recognition

TTY was recognized as a company with:

"Comprehensive strategy, structured methodology, and technical mastery in legacy system modernization, from analysis to delivery."

Why this case stands out

Automated conversion of one of the largest volumes of code and data in the country

Zero critical failures

Complete preservation of business logic

Integration with the client team, promoting knowledge and confidence

Proprietary tool that accelerates and standardizes deliveries