Compare benefits, costs, risks and dependencies to choose a practical, phased approach to application modernization.
Who is this for? IT management, product managers and decision-makers with a grown application portfolio.
Use cases and context
Not every older application needs to be completely replaced. Sometimes an improved interface or more stable operation brings more benefits than a completely new development. The decision should therefore be based on the business process and its actual limitations.
Possible paths range from continued operation and targeted improvement to technical relocation and replacement. Each option changes costs, capabilities and risks differently. A decision template makes these differences visible and names assumptions instead of justifying a preferred technology retrospectively.
The approach in detail
- Specify problems and goals. Record user groups, business impact, technical risks and necessary skills together.
- Compare realistic options. Evaluate one-time effort, ongoing operations, dependencies, migration risks, and legacy data handling.
- Choose a limited next step. Assign pilot, architecture review, or data analysis with clear decision criteria and a verifiable outcome.
Expected outcomes
- Comparable options for action
- Visible assumptions and open questions
- Prioritized dependencies and migration risks
- Decidable next step with responsibility
Prepare for an informed decision
Process overview, operating costs, known faults, license commitments and upcoming changes are helpful. Estimates may be used, but must remain recognizable as such.
Take into account the parallel operation and the efforts of the departments. A technically successful migration is not yet a success if data quality, training or the replacement of old processes remain unclear.
Questions and answers
Should the target technology be chosen first?
The requirements and options should be clear first. The technology selection follows from this and is checked against operation and existing capabilities.
How do you avoid a risky complete change?
Through sensible intermediate states, demarcated functional areas and clear handover criteria. Not every system can be replaced step by step in the same way.