Choosing between an off-the-shelf ERP and a custom platform
The build-versus-buy debate is usually framed wrongly. The real question is where your competitive advantage lives, and whether software would flatten it.
Standard software standardises you
Off-the-shelf ERP encodes a best-practice process. For accounting, payroll and statutory reporting, that is exactly what you want — there is no advantage in a bespoke general ledger.
For the process that actually wins you customers, standardisation is a cost. If your differentiator is quoting a complex configured product in four hours, software that forces a generic quotation workflow is removing the reason customers choose you.
Count five years, not one
Licence cost is the visible number. Implementation partner fees typically run one to two times licence value in year one, and customisation is billed at premium rates because the vendor knows switching is painful.
Custom development front-loads cost and eliminates per-seat licensing entirely. Around year three, for teams above roughly forty users, the lines usually cross.
- Licence per user per year, with escalation
- Implementation partner fees
- Mandatory upgrade projects
- Customisation billed at vendor rates
- Internal time during rollout — usually the biggest cost of all
Why rollouts fail
Almost never for technical reasons. They fail when the scope covers every department simultaneously, when the shop floor was never consulted on data entry, and when go-live happens without a parallel run.
A phased rollout that starts with the single most painful module produces visible value in six weeks and buys the patience needed for the harder phases.
A practical answer
Buy for commodity functions. Build where you compete. Integrate the two properly. This hybrid is what most of our manufacturing clients end up with, and it is usually cheaper than either purist position.
Key takeaway
Buy commodity processes, build your differentiator, and phase the rollout so value arrives in weeks rather than quarters.