Migration & Modernization

Your re:Invent 2026 guide to mainframe modernization with AWS Transform

Mainframe modernization has entered the agentic era. At AWS re:Invent 2026, customers will show how AWS Transform, the agentic AI service for migration and modernization, makes decades of business logic visible across mainframe, midrange, and distributed systems. Kiro, the AI-powered development environment from AWS, brings agentic coding to forward engineering. Together, they compress a journey that once took years of discovery, design, and redevelopment into months. The conversation is no longer just about leaving the mainframe. It is about reimagining the business capabilities inside core systems so they can power AI agents and real-time decisions. The customers coming to Las Vegas are already making that shift, and they will show what they changed, what they built, and how fast they moved. 

United Airlines, Bank Hapoalim, Experian, Itaú Unibanco, Nissan, and Bread Financial each walk through a real application they modernized with AWS Transform for mainframe. When the sessions end, the AWS Modernization & Agentic Transformation team hosts two evening receptions, one for customers and one for partners, so you can keep the conversation going with peers doing the same work. 

In this post we organize the week by what you want to get out of re:Invent, so you can build your agenda in a few minutes. 

Heading to re:Invent? Customers can request an invitation to the customer reception on Wednesday, December 2, and partners can request an invitation to the partner reception on Tuesday, December 1. Space is limited and every registration is reviewed, so request yours early. 

Favorite your sessions before you go. Breakouts are walk-up this year, so favorites are how you keep them on your agenda and get alerts if a time or room changes. They also tell us which sessions matter most to you. Each session title below links to its page in the re:Invent event catalog, and you can also favorite sessions in the AWS Events app. Workshops and builders’ sessions take reservations and fill up, so reserve those seats early. 

Hear from customers who have done it 

Start here if you lead a modernization program. Each breakout pairs two customers, and together the three breakouts cover how the journey works, how it scales, and what it unlocks. 

End-to-end agentic modernization with United Airlines & Bank Hapoalim (MAM206) 

Breakout | Level 200 | Mon, Nov 30, 4:30 PM | Caesars Palace, Content Hub, Blue Theater 

See the full journey, from automated discovery, business rule extraction, and requirements generation with AWS Transform through microservices engineering with Kiro to production deployment. United Airlines shares how it modernized crew operations while maintaining Federal Aviation Regulations (FAR) compliance, and Bank Hapoalim shares how it analyzed a 3.2-million-line mortgage application and delivered an insurance module to production under a board-mandated deadline. 

Using AI to scale legacy app modernization with Experian & Itaú (MAM207) 

Breakout | Level 200 | Wed, Dec 2, 1:00 PM | Caesars Palace, Content Hub, Red Theater 

A modernization approach only matters if it scales beyond the first pilot. Experian and Itaú Unibanco share how they grew their approach with AWS Transform and Kiro from a single engagement into an enterprise-wide operating model. Experian standardizes modernization across 550+ workloads in multiple regions, and Itaú has expanded to 43 business domains, processing nearly 140 million lines of code in a single month. 

Transforming legacy core to agentic AI with Nissan & Bread Financial (MAM324) 

Breakout | Level 300 | Wed, Dec 2, 4:30 PM | Caesars Palace, Content Hub, Blue Theater 

See what modernized applications unlock for agentic AI. Nissan reimagined core operations into a cloud-native platform designed for AI-ready workflows, and Bread Financial is decomposing monolithic capabilities into bounded-context and domain-specific services that create a modern foundation for autonomous workflows. Both used AWS Transform to extract business rules from decades-old applications and Kiro to forward engineer production-ready code. 

Roundtables for AWS Partners 

These small-group discussions bring AWS and partner experts together around real migration and modernization challenges. They are for AWS Partners only, and seats are limited and invitation-only. Partners interested in attending can reach out to their AWS partner team. 

Accelerating enterprise migrations at scale (RT25) 

Partner roundtable | Level 200 | Mon, Nov 30, 2:00 PM | Encore, Schubert 

Bring your questions about moving complex estates, from VMware and mainframe workloads to legacy databases and data center exits. See how AWS Transform and partner solutions take an agentic approach to speeding up migration while managing licensing, end-of-support deadlines, and cost. 

Agentic AI & partner delivery: building a profitable migration & modernization factory (RT10) 

Partner roundtable | Level 200 | Wed, Dec 2, 12:30 PM | Encore, Strauss 

Bring your hardest blocker to a discussion for partners building migration and modernization practices. Compare how partners combine AWS Transform, agentic delivery, and their own methods and tools to move programs from assessment into production and keep them modern, and how that shift changes delivery economics, staffing, and pricing. 

Meet your peers after hours 

Some of the most useful conversations at re:Invent happen after the sessions end. Both receptions are invitation-only and hosted by the AWS Modernization & Agentic Transformation team. 

Customer reception 

Wed, Dec 2 | 5:00 to 7:30 PM PT | Harrah’s Las Vegas, Elko-Ely Room 

Step away from the expo floor for an evening with senior leaders who are modernizing the core systems that run their business. After a welcome keynote from AWS leadership, executives from BMW, Prudential, and Bradesco Seguros join a customer panel on what it really took to reimagine their core systems for AI. Afterward, stay for food, drinks, and networking with more than 100 customer executives and the AWS Transform for mainframe team. The evening is designed for CIOs, CTOs, enterprise architects, transformation leads, and platform owners. Request an invitation to the customer reception. 

Partner reception 

Tue, Dec 1 | 5:00 to 7:30 PM PT | Paris Las Vegas, Versailles 1 and 2 

An evening for partners building and scaling modernization practices across mainframe, midrange, and distributed platforms on AWS. After a welcome keynote from AWS leadership, leaders from IBM, Thoughtworks, Thought Machine, and Infosys join a partner panel on what it takes to win, deliver, and scale modernization engagements. You’ll also hear the AWS Transform partner ecosystem vision for 2027 and beyond and network with the systems integrators and software partners delivering it. The evening is designed for practice leaders, solutions architects, delivery leads, and alliance managers. Request an invitation to the partner reception. 

Get hands-on 

If you’d rather build than listen, these sessions put the reimagine workflow in your hands. Each runs twice, and you’ll need a laptop. 

Modernize legacy batch into event-driven with AWS Transform & Kiro (MAM309) 

Builders’ session | Level 300 | Mon, Nov 30, 11:30 AM (Caesars Palace, Content Hub) or Tue, Dec 1, 12:00 PM (MGM Grand, Chairman’s 363) 

Turn overnight batch processing into event-driven microservices. You’ll extract business rules with full traceability in AWS Transform, then use Kiro to generate the services and the infrastructure as code to deploy them. 

Reimagine legacy apps to be agentic AI ready with AWS Transform & Kiro (MAM316) 

Workshop | Level 300 | Mon, Nov 30, 3:30 PM (MGM Grand, Premier 310) or Thu, Dec 3, 8:00 AM (Caesars Palace, Milano I) 

Take an application through the full journey. You’ll reverse engineer it with AWS Transform, separate deterministic logic from work suited to AI agents, design the target with Kiro, and build the agentic layer on Amazon Bedrock and Amazon Bedrock AgentCore. Planning to attend MAM206 on Monday? Choose the Thursday workshop so the two don’t overlap. 

See what’s new and what’s next

Scaling legacy app modernization with autonomous agents (MAM349) 

Breakout | Level 300 | Tue, Dec 1, 1:30 PM | Caesars Forum, Forum 120, Content Hub, Blue Theater 

Legacy application modernization is a coordination and code generation problem, because a large application must be understood, verified, and integrated without losing fidelity. See how AWS Transform for mainframe extracts business rules from legacy code into a traceable description of what the application does, and discover the latest capabilities for scaling modernization. 

From migration to continuous modernization: reduce tech debt at scale (MAM344) 

Breakout | Level 300 | Thu, Dec 3, 9:00 AM | Caesars Palace, Promenade Level, Roman I 

AWS Transform product leadership shares how agentic AI turns modernization from a one-time project into an always-on practice, from modernizing mainframe, Windows, and custom applications to keeping those modernized codebases current and AI-ready. 

Knowledge representations for autonomous software lifecycle management (INV512) 

Chalk talk | Level 500 | Mon, Nov 30, 12:00 PM (MGM Grand, Room 353) or Wed, Dec 2, 12:00 PM (Caesars Forum, Alliance 314) 

This chalk talk examines how knowledge graphs let agents understand, validate, and evolve large applications, reasoning at the specification level rather than the code level. It runs twice, so reserve the time that fits your week. 

Find us in the AWS Village 

The AWS Village on the Expo floor is where new launches land first. Three migration and modernization kiosks there offer live demos and time with specialists. Every kiosk covers every workload, including mainframe, .NET, SAP, and VMware, so you can stop by whichever one you reach first. 

  • Application modernization: See AWS Transform for mainframe take an application from assessment and business rule extraction through forward engineering in Kiro. 
  • Cloud migrations: Moving on-premises, VMware, and other cloud workloads to AWS. 
  • Eliminate tech debt: How AWS Transform uses agentic AI to keep removing tech debt across your portfolio. 

At any of the three kiosks, ask to see the two mainframe demos. 

  • Reimagine experience: Watch AWS Transform reverse engineer a mainframe application into business rules and development-ready requirements, then see Kiro forward engineer those requirements into modern code. 
  • Composability with MCP: See how partners and customers extend AWS Transform with their own tools and agents through the Model Context Protocol (MCP). 

The AWS Village is open Monday 4:00 to 7:00 PM, Tuesday and Wednesday 10:00 AM to 6:00 PM, and Thursday 10:00 AM to 4:00 PM. 

Build your week in five steps 

  1. Register for AWS re:Invent 2026.
  2. Favorite every session in this guide in the event catalog so it stays on your agenda.
  3. Reserve your seat in MAM309 and MAM316. Breakouts are walk-up, so plan to arrive a few minutes early.
  4. Request an invitation to the customer reception or the partner reception.
  5. Download the AWS Events app for iOS or Android to see your reserved and favorited sessions in one view.

Can’t make it to Las Vegas? 

After re:Invent, we’ll publish a recap on the AWS Migration & Modernization Blog with links to session recordings, launch announcements, and deep-dive posts, so you can catch up on your own schedule. 

Conclusion 

We rounded up where to see how enterprises reimagine their core systems with AWS Transform for mainframe and Kiro at re:Invent. To go deeper before the event, read Reimagine mainframe applications with traceability and speed using AWS Transform and Getting mainframe reverse engineering right at scale, or explore the AWS Transform for mainframe documentation. If you have a modernization program in mind, contact an AWS representative. 

See you in Las Vegas.