System inventory
Identify actual versions, dependencies, jobs and recovery limits.
Prepare the inventoryResources
Review the system before choosing the rewrite.
These guides help turn an aging application into a specific investigation and a useful first scope.
Scope and cost drivers
Review undocumented behavior, data and coexistence requirements.
Prepare for an estimateChoosing help
Ask how working behavior, release and ownership will be checked.
Read provider questionsDoes old software always need replacement?
No. The decision depends on support, maintainability, access and the required change. A focused repair or upgrade may address the immediate constraint.
Can AI explain the inherited code?
It can assist an approved review, but generated explanations need checking against source and actual behavior. Restricted code and data need an appropriate handling agreement.
What makes a useful first phase?
A defined improvement is verified against important tasks, with documented limits and a practical release and recovery plan.