Our Business
Legacy System Modernisation
Recover business knowledge and replace ageing technology in manageable stages.
Typical Customer Challenges
- Unsupported or ageing platforms
- Undocumented business rules
- High operational risk from a single old system
What KCSG Provides
- Current-state and dependency assessment
- Business-rule clarification
- Phased rebuild and data migration
- Parallel operation, cutover and rollback planning
How We Approach Delivery
Define Scope, Responsibilities and Acceptance
Design and Deliver in Controlled Increments
Support Go-Live, Operation and Continuous Improvement
Delivery Consideration
Modernisation is not a simple rewrite. The project must decide what business behaviour to retain, improve or retire.
What the Engagement Can Cover
The exact scope is agreed according to business priority, current systems, internal capabilities and the level of support required.
Current-State Discovery
Recover business rules, dependencies, interfaces and operational workarounds from systems and users.
Knowledge Preservation
Document critical functions, data definitions, reports and exception handling before knowledge is lost.
Transition Planning
Choose replacement, re-platform, integration or phased coexistence according to risk and value.
Data Migration
Profile, clean, map, reconcile and retain data according to business and policy needs.
Coexistence and Integration
Keep essential old and new components connected during a staged transition.
Cutover and Stabilisation
Rehearse migration, define rollback, support users and resolve early-life issues.
Typical Project Outputs
- Application, interface and dependency inventory
- Business-rule and current-process documentation
- Modernisation options with scope, risk and sequence
- Data migration, reconciliation and retention plan
- Cutover, rollback, stabilisation and decommission checklist
Questions We Clarify Early
- Which functions are genuinely business-critical?
- Where is business knowledge undocumented or held by only a few people?
- Which systems, devices or partners depend on the legacy platform?
- What historical data must remain searchable or auditable?
- How much change can the business absorb at one time?
A Controlled Delivery Path
A clear sequence helps avoid premature technology decisions and makes responsibilities, acceptance and operational readiness visible.
Inventory
Identify systems, users, data, interfaces and operational constraints.
Recover
Document hidden rules, exceptions and dependencies.
Prioritise
Separate essential outcomes from obsolete features.
Transition
Migrate in stages with testing, reconciliation and fallback.
Decommission
Remove old components only after evidence and retention needs are met.
Operational Readiness
- Parallel-run or phased-cutover decision
- Data reconciliation and sign-off ownership
- Rollback criteria and recovery point
- Early-life support and issue triage
- Secure archival and decommission evidence
Relevant Capabilities
The following are representative capabilities and technologies. Final selection depends on the customer environment and approved architecture.
- Application Assessment
- Process Mapping
- Data Profiling
- Migration
- API / EDI
- Web Modernisation
- Database Upgrade
- Cutover Planning