Modernize complex systems at enterprise scale

AWS Transform is AWS’s agentic AI service for modernizing legacy workloads — it analyzes mainframe and COBOL code, maps dependencies and accelerates migration and refactoring, cutting timelines from years to months. Thoughtworks pairs AWS Transform with its AI/works™ platform and AWS Mainframe Modernization Competency to modernize complex estates on AWS incrementally and at enterprise scale, preserving business logic while reducing risk. Start with our 3-day AI/works and AWS Transform workshop to assess your estate.

Together we move enterprises from legacy-bound systems to resilient, AWS-native platforms. We assess and map the existing estate, then modernize incrementally — growing new cloud-native services around the legacy core until it can be safely retired. Combining AWS Transform, agentic AI and Thoughtworks engineering discipline, we deliver production-ready systems and measurable outcomes, as we did for Bluestone’s seven-month mainframe-to-cloud transformation. Book a workshop to map your modernization journey.

AWS offers funding to lower the cost of cloud transformation, including the Migration Acceleration Program (MAP), which can offset assessment, migration and modernization costs — typically a share of your first-year AWS run-rate spend. As an AWS Premier Partner, Thoughtworks helps eligible enterprises identify the right programs and apply with confidence. Explore our AWS funding programs page to see what your modernization journey may qualify for.

AWS supplies the world’s deepest cloud and agentic AI; Thoughtworks supplies the engineering discipline to turn it into production systems that keep evolving. We’re an AWS Premier Partner with 600+ certified engineers, 24+ competencies and specializations, the 2025 AWS Data & Analytics Global Partner of the Year award, and a Strategic Collaboration Agreement with AWS. The result is modernization that’s engineered, not experimental — and measured in business outcomes.

Start with our 3-day AI/works + AWS Transform workshop, available on AWS Marketplace. In three days our engineers assess your systems, map a modernization path and quantify the business case, so you leave with a costed roadmap. It’s the fastest, lowest-risk way to begin an AWS cloud transformation, mainframe modernization or agentic AI initiative. Book the workshop on AWS Marketplace, or talk to our team.

It’s a complimentary AWS program for ISVs and software teams building agentic AI. Across two core modules, Executive Alignment and Builder Days, Thoughtworks runs our 3/3/3 motion to take you from a validated agentic charter to a working prototype, with up to $50K of AWS-funded build acceleration. It fits software companies at any stage, from a first use case to agents already in production.

 3/3/3 is Thoughtworks’ AI-native delivery framework: Concept in 3 days, Prototype in 3 weeks, and a Minimum Lovable Product in 3 months. It pairs product thinking, design and engineering with the AI/works™ platform to move from idea to production faster and with less risk.