Legacy System Modernisation Resource Plan
This is a practical guide to building a resource plan for a legacy system modernisation project — the people and resources needed, when, and how they are allocated, adapted to the realities of modernising or replacing ageing core systems.
What a Resource Plan is
A resource plan is the people and resources needed, when, and how they are allocated. For the full concept and how it works in general, see Resource Planning. On a legacy system modernisation project it plays the same role, tuned to this kind of work.
Why it matters for a Legacy System Modernisation project
Legacy System Modernisation projects live or die on modernising or replacing ageing core systems. A well-built resource plan gives the team a shared, explicit reference for exactly that — reducing ambiguity, aligning stakeholders, and making problems visible early enough to act. Skipping it, or doing it generically, is how legacy system modernisation projects drift into avoidable delay and cost.
What to include
- Roles and skills needed
- Allocation over time
- Capacity vs demand
- Resource calendar
Legacy System Modernisation-specific considerations
Tailor the resource plan to the risks that most often derail legacy system modernisation projects:
- Undocumented legacy behaviour
- Phased cutover risk
- Knowledge loss
Example
On a real legacy system modernisation project, the resource plan would be shaped by modernising or replacing ageing core systems. In particular, it should explicitly account for the project’s biggest risks — undocumented legacy behaviour, phased cutover risk, knowledge loss — rather than treating them as afterthoughts.