Should we replace a legacy application or improve it?
Start with the failures, user tasks, and dependencies. An integration or focused repair may be enough. A larger replacement needs a migration plan, checks against existing behaviour, and a way to recover if the cutover fails.
Scroll sideways to read all columns.
| Problem | Option to investigate | Before approving work |
|---|---|---|
| Repeated entry between two systems | Connect supported interfaces. | Agree record ownership, identifiers, and reconciliation. |
| One slow or confusing workflow | Improve that workflow within the existing application. | Capture the current task and check unaffected journeys. |
| An unsupported or fragile component | Replace the component in stages. | Map dependencies and rehearse deployment and rollback. |
| The application no longer fits the service | Plan a broader replacement and migration. | Agree data checks, cutover responsibilities, training, and recovery. |
Map the system people actually use.
Follow important tasks from first input to final record. Include spreadsheets, scheduled jobs, and manual work outside the application. Name the integrations, users, and data owners involved. Compare documentation with real examples, including unusual cases that reveal old business rules.
Prioritize a concrete operating problem.
Choose a specific problem, such as a slow approval, unreliable integration, or report that needs repeated correction. Measure the current process. Compare a new interface, component replacement, or full rebuild against the improvement your team needs.
Preserve important behaviour with acceptance cases.
Turn representative records and difficult cases into tests. Cover permissions, calculations, exports, integrations, and user tasks. Record any intended change and who approved it so reviewers can tell an improvement from a mistake.
Treat data movement as its own project.
Document source fields, identifiers, transformations, and migration checks. Reconcile totals and sample records. Plan how to handle updates during the transition. Include hosting, retention, access, and language requirements in the design.
Deliver in stages your operators can accept.
Set checkpoints where users try complete tasks and the team checks integrations and migrated data. Plan the switch, recovery, and support before changing the live system. Active K Digital can assess existing code and operations and propose staged delivery with source, documentation, and handover agreed.
Your starting checklist.
- Map critical workflows, integrations and data owners.
- Choose the operating problem modernization should solve.
- Capture essential behaviour and intended changes.
- Plan migration checks, cutover and recovery.
- Assign acceptance, documentation and support responsibilities.