Sold by: LiminalArc
A 6–8 week fixed-scope engagement that turns three decades of undocumented RPG into a documented architecture, a five-year TCO tested against your hurdle rate, and a sequenced AWS roadmap. It starts with a complimentary AS/400 Modernization Workshop — half a day to a full day, no code access required — where business and IT live-score the portfolio together and you keep seven artifacts. LiminalArc is an AWS Select Tier Services Partner.
Overview
Turn the roadmap into a fundable plan.
A fixed-scope engagement that turns three decades of RPG into a documented architecture, a five-year TCO tested against your own hurdle rate, and a sequenced plan your team owns — with the first 90-day slice ready to build on AWS.
Who this is for
IT and business leaders running critical workflows on AS/400 (IBM i) who are facing an IBM renewal or Power hardware refresh decision, cannot fully document what the code does, and cannot get a modernization business case approved. About 100,000 companies still run these systems in production — not because they are loved, but because the cost of leaving has always looked higher than the cost of staying.
Two steps, and only the second one reads code
1. AS/400 Modernization Workshop — complimentary. Half a day, or a full day to live-score your entire portfolio. No code access and no ingestion: scoring runs off your team's knowledge and a short pre-read, so saying yes does not require a security review. Business and IT score the same portfolio in the same room across six dimensions — data gravity, integration, regulation, skills risk, technical health and business criticality — and the gaps between their scores are the finding. Every workload lands on one of six dispositions: retain, rehost, modernize in place, refactor or rewrite, replace with a package, or retire.
2. Code Ingestion and Roadmap Engagement — 6 to 8 weeks. Fixed scope, priced against your environment following the workshop. This is the step that reads the code. It runs in four stages: environment configured, code and content ingested, applications analyzed, strategy and benefits established.
What you walk away with
From the workshop, seven artifacts that are yours to keep:
- Workload disposition heat map
- Skills-risk register
- Six-R framework
- Live scoring tool run on your own systems
- Cost POV
- Use-case hypothesis within one week.
From the engagement, six deliverables:
- Current-state assessment
- Capability-to-domain model
- End-state solution architecture
- Defensible benefits case and five-year TCO
- Asset transformation and funding model
- Modernization vision and roadmap
How the code gets read
Our method reads RPG, CL, DDS and the other languages in your footprint at scale and maps their dependencies, using AI-accelerated tooling that includes Code Navigator, our own code-reading instrument. Three lenses come together in one queryable model grounded in your own data: the business capabilities the code supports, the economics of changing it (NPV, IRR, breakeven), and the technical domains underneath. Your code is analyzed in a controlled environment and is never used to train AI models, and where you already run a vector database and an LLM, the analysis can even run inside your environment on your own tokens (if desired).
Where the plan lands on AWS
The roadmap targets AWS services by workload, not by default. The data platform is usually the first slice — Amazon Aurora PostgreSQL, Amazon RDS, Amazon S3, AWS Glue and Amazon Redshift. Application workloads land on Amazon EC2, Amazon ECS or Amazon EKS, AWS Lambda and Amazon API Gateway. The foundation is an AWS landing zone with AWS Transit Gateway and AWS Direct Connect. Analytics and generative AI on Amazon Bedrock and Amazon SageMaker come after the platform can support them, not before.
Delivered with AWS
LiminalArc is an AWS Select Tier Services Partner. AWS migration funding is reached through TD SYNNEX, an AWS Migration Competency Partner, which also includes a no-cost Optimization and Licensing Assessment. Which funding path applies to your environment is established at the workshop, with your AWS account team.
Proof
On one AS/400 footprint — 47,000 files and 3.6 million lines across six-plus languages, from C to RPG — our assessment took about 720 hours. Commercial tooling built for the platform was estimated at 2,000 to 8,000 hours; a manual line-by-line review, 18,000 to 36,000. The client ran its own AI queries against the same codebase to check the findings and turned up nothing that contradicted ours.
How to start
Book the complimentary AS/400 Modernization Workshop. The engagement is then scoped and priced from what the workshop finds, and issued to you as a private offer in AWS Marketplace. Contact stacy.gordon@liminalarc.co to put dates on it.
Highlights
- Two steps, and only the second one reads code. The complimentary AS/400 Modernization Workshop runs half a day to a full day with no code access and no ingestion, so saying yes does not require a security review. You keep seven artifacts — workload disposition heat map, skills-risk register, sequenced roadmap, the Six-R framework, the live scoring tool, a costed point of view — and a use-case hypothesis within one week.
- Six deliverables in six to eight weeks: current-state assessment, capability-to-domain model, end-state solution architecture, defensible benefits case and five-year TCO, asset transformation and funding model, and modernization vision and roadmap. Every workload is scored up front against six dispositions, then executed in prioritized 90-day slices rather than one big-bang replacement — no big bang, but a destination.
- Proven at scale on the assessment itself. On one AS/400 footprint — 47,000 files and 3.6 million lines across six-plus languages, from C to RPG — our assessment took about 720 hours, against an estimated 2,000 to 8,000 hours for commercial tooling built for the platform and 18,000 to 36,000 for a manual line-by-line review. The client ran its own AI queries against the same codebase and turned up nothing that contradicted our findings.
Details
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Pricing
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Pricing is based on your specific requirements and eligibility. To get a custom quote for your needs, request a private offer.
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Support
Vendor support
Engagement support comes directly from the LiminalArc team delivering your work.
Contact: Stacy Gordon, Director of Strategic Growth and Partnerships — stacy.gordon@liminalarc.co — 404-210-2499 — liminalarc.co
Hours: Monday to Friday, 9:00 a.m. to 6:00 p.m. US Eastern. Inquiries are acknowledged within one business day.
What to expect: Pre-sales questions, workshop scheduling and engagement scoping are handled at no charge. Workshop participants receive their seven artifacts at the session and the use-case hypothesis within one week. For the Code Ingestion and Roadmap Engagement, named delivery contacts, the escalation path, response commitments and the stakeholder review cadence at each of the four stages are defined in the statement of work for that engagement.