What do you have?
Know what you have before deciding what to change. Understand the applications, dependencies, costs and technical risks in your mainframe estate.
Understand the estate. Make better transformation decisions.
A mainframe portfolio assessment establishes what you have, how applications and dependencies behave, and which transformation options are realistic.
What applications are running? How are they connected? Which components are still used? What condition are they in—and which findings can you trust?
I help organizations bring together technical evidence, operational information and application-owner knowledge to establish a structured current-state assessment. The purpose is not inventory for its own sake: it is to clarify scope, expose dependencies and create a sound basis for deciding what to retain, simplify, modernize or migrate.
Six areas of assessment
- Application landscape and scope: identify applications, programs, online transactions, batch jobs, schedulers, databases, files, interfaces and shared components. Clarify application boundaries, active use and potential redundancy.
- Dependencies and integration: map inbound, outbound and shared dependencies, data flows and integration with distributed systems. Investigate execution frequency, latency sensitivity and transaction boundaries where relevant.
- Business context and ownership: establish business functions, application criticality, owners, service expectations and operational responsibilities; validate findings with application owners and specialists.
- Documentation and testing: assess architecture diagrams, specifications, business rules and operating procedures, alongside existing test coverage, regression assets, test data and environments. Identify knowledge and verification gaps.
- Technical condition and operational baseline: examine maintainability, technical debt, known defects, performance, resource consumption and execution patterns. Establish usage and cost baselines where reliable measurements exist.
- Transformation readiness: consolidate complexity, candidate scope, unresolved dependencies and areas needing deeper investigation. Separate verified facts from assumptions and incomplete information.
Turn assessment into actionable insight
An inventory alone is not enough. Findings must be reconciled across sources, application boundaries clarified and technical assumptions validated against operational and business knowledge. Assessment tools can accelerate discovery, but their output still requires verification.
How I can help your programme
I can bring an independent perspective to this stage through a focused portfolio review or a deeper assessment, depending on the decisions you need to make and the evidence already available. The work can start small and expand only where the findings justify it.