---
title: "Composable by Design: Mainframe Modernization for the Agentic Era"
description: The organizations moving fastest have stopped treating modernization as a single program and started treating it as a composable system. They break the work into discrete, reusable units such as code analysis, business rule extraction, refactoring, testing, and validation, and they orchestrate those units as needed rather than committing to one fixed path.
image: https://webinars.techstronglearning.com/hubfs/2026.12.10%20Tata%20Consultancy%20Services-Social-1080x1080.png
---

Composable by Design: Mainframe Modernization for the Agentic Era

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##### Thursday, December 10th

11 am ET

Mainframes still run the core of the enterprise, but modernizing them remains one of IT’s most stubborn problems. Programs run long and over budget. Decades of business logic are buried in code few people still understand. The experts who hold that knowledge are retiring, and the traditional approach of one massive, sequential migration leaves little room to adapt when priorities shift.

The organizations moving fastest have stopped treating modernization as a single program and started treating it as a composable system. They break the work into discrete, reusable units such as code analysis, business rule extraction, refactoring, testing, and validation, and they orchestrate those units as needed rather than committing to one fixed path.

Multi-agent AI makes this practical. Specialized agents can each own a piece of the work, coordinate across traditional and niche legacy technologies, and hand context to one another without manual relays. Human experts stay in the loop at the decision points that matter most, so institutional knowledge is validated and preserved instead of lost.

If you are responsible for a mainframe estate, or for the business outcomes that depend on it, this session gives you a practical framework for modernizing faster and with less risk. The discussion draws on real-world experience from TCS and AWS. Attendees should attend who are looking to:

\- Move past the big-bang model. See why single, sequential migrations keep stalling and what a composable alternative looks like.

\- Capture knowledge before it walks out the door. Learn how to surface and preserve critical business rules while your experts are still available to validate them.

\- See multi-agent AI applied to real modernization work. Go beyond the hype to how specialized agents coordinate on complex legacy portfolios.

\- Cut risk without slowing down. Understand where to put human oversight so speed doesn’t come at the cost of accuracy.

\- Build a model that scales. Get a repeatable approach that grows from one application to an entire estate without restarting each time.

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### Balu Subramoniam V

###### Consulting Partner, Gen AI Legacy Modernization, TCS Cloud Unit - Tata Consultancy Services

 With over 23 years of consulting experience in IT and Financial Services, Balu Subramoniam V brings a strong blend of business, technical, and project leadership expertise. He has led multidisciplinary teams, strengthened client partnerships, and driven process and technology improvements that deliver lasting business value. 

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### Vipin Gupta

###### Worldwide Principal Mainframe Modernization Specialist Solutions Architect - Amazon Web Services

 Vipin Gupta is a Worldwide Senior Mainframe Modernization Specialist Solutions Architect at AWS, specializing in enterprise-scale mainframe transformation. His work focuses on helping customers modernize legacy applications and leverage technologies such as AWS Transform to accelerate migration and modernization journeys. 

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