Anyone can buy Business Central. Owning it takes an Internal Super User (ISU).
What is an Internal Super User (ISU)?
Most Business Central implementations do not succeed or fail because of the software. They succeed or fail based on whether the business takes ownership of it.
DIY-ERP builds that ownership around one capable person inside your organisation, the Internal Super User, or ISU.
Working alongside a dedicated DIY-ERP Implementation Mentor, your ISU learns Business Central by configuring it, leads your organisation through implementation and retains the knowledge needed to improve it after go-live.
Without an ISU, most businesses never own the ERP they paid for, and it costs them dearly.
During the project, it costs you invisibly.
Roughly 2,337 hours across fifteen or more people isn’t uncommon. Independent benchmarking puts underestimated internal staffing as the single biggest driver of ERP budget overruns, ahead of scope creep.
You get a cut-down system.
The consultant has to learn your business before they can configure it, so what you receive is built from what they understood second-hand.
Your old workarounds get hard-coded.
Businesses tend to ask for their existing habits to be rebuilt in the new system. You pay to automate the mess rather than remove it.
At handover, the knowledge leaves.
The consultant invoices, their knowledge leaves and every future change restarts the meter.
Then it never stops.
As an example: around $30,000 a year in change fees, $24,000 in retainer, and 120 hours of your own people specifying and re-testing. That’s about $63,600 annually, rising, for as long as you run the system.
What ownership with an ISU gives your business
Your ISU already understands how the business runs, who does what, and which processes actually matter. The implementation adds deep Business Central knowledge on top of that, and this combination is what makes the difference. They shape the system to fit the business perfectly. They lead the data across, oversee testing, and sign off the processes the business will run on to fit the system to the business perfectly.
Knowledge that stays inside the organisation
Your understanding of Business Central remains with your team rather than leaving when an external consultant finishes the project.
Stronger user adoption
Employees receive guidance from someone who understands their work, has involved them in the process and can explain why changes are being made.
Faster internal improvements
Many routine reports, workflow adjustments and system improvements can be handled internally rather than joining an external support queue.
Clear accountability
One primary ISU owns the implementation outcome, keeps decisions moving and provides a clear connection between DIY-ERP and the organisation.
Continual improvement
After go-live, the role continues to identify improvements, reduce manual tasks and build a digital roadmap with senior leadership.
Greater value from Microsoft
The ISU can help the organisation extend its use of Power BI, Teams, Power Automate, Copilot, Dataverse and other tools across the Microsoft ecosystem.
The hidden cost of traditional ERP without an ISU
When businesses consider appointing a full-time ISU, the first question is often whether they can afford to free up a capable person.
The more useful comparison is the internal time already consumed by a traditional ERP implementation.
Process workshops, documentation, project management, testing, steering committees and repeated decision-making can draw employees away from their roles throughout the project.
In DIY-ERP’s illustrative mid-market analysis:
Traditional implementation
$202,000
in hidden internal time
- 2,337
- hours consumed internally
- 15+
- employees drawn off their roles
- $0
- retained capability after go-live
DIY-ERP with a full-time ISU
$60,000
total internal investment
- 74
- hours from the wider team
- $54,000
- full-time ISU, sub-20-week build
- 1
- trained specialist retained in-house
The ISU is not an additional layer of project cost. The role replaces a larger, fragmented commitment spread across the organisation and leaves the business with retained capability after go-live.
These figures are illustrative and based on a mid-market organisation of approximately 80 to 150 employees. The complete methodology and sources are available in The Hidden Cost of Traditional ERP.
Reach out to us for a custom hidden cost analysis of your business.
Finding your Internal Super User is Easy
The perfect person for the task learns Business Central by configuring it alongside an external specialist mentor. Its complete go-live and continued implementation is then handled seamlessly by this internal expert, with support at hand any time they need it. From the ground up, every DIY-ERP implementation is built around them, at a fixed price, in under 20 weeks.
There are two ways to fill the ISU role.
Appoint someone internally
This is often the fastest path when someone already understands the organisation, its processes and its culture. Their existing workload must be materially reduced for the duration so they have the capacity to lead the implementation.
Recruit externally
This may be necessary when no internal candidate has the right attributes or availability. An external appointment can also bring additional experience in business systems, data, process improvement or organisational change.
The implementation is seamless and controlled
The price is fixed, the timeline is fixed, and the outcome is guaranteed. You just need an ISU with genuine capacity, and an internal senior leader to keep decisions moving.
An ISU for the length of the implementation.
Around 30 hours a week covers the guided sessions and the work either side of them. The rest goes to data cleansing and migration, change management, and their own colleagues.
Thirty minutes of your sponsor, every week.
Your CEO or Managing Director joins the weekly session where the ISU presents to the mentor. Decisions get made in the room, and the business sees that the project matters.
The authority to decide.
Your ISU signs off the processes the business will run on, and the testing behind them. Agree that mandate with your sponsor before the project starts.
The go-live call, and the cutover.
Your ISU decides when you go live and performs the cutover with their mentor beside them. Because the system is configured and tested well beforehand, that is a scheduled event measured in minutes.
The ISU is never on their own.
Your ISU does not arrive as a Business Central expert. They leave as one. The support provided is a dedicated mentor who works beside them through every phase and is on demand between sessions, with a structured programme that makes the next step and the reason for it clear.
Your ISU receives:
- A dedicated DIY-ERP Implementation Mentor
- A structured program with clear stages, sessions and tasks
- Hands-on training through real configuration work
- A best-practice Business Central configuration and supporting toolkit
- Mentor support throughout the implementation
- Data migration and testing guidance
- Training resources and a train-the-trainer approach
- Change-management tools and templates
- Guidance through go-live and cutover
- Fixed-price and fixed-timeframe delivery assurance
Every DIY-ERP implementation is delivered in full, on budget and in under 20 weeks, guaranteed.
Questions we get asked.
No. Nobody writes code. Knowing how your business runs and being confident in Excel counts for more, because the programme teaches the system. What cannot be taught is the temperament.
Full-time, for the length of the implementation. Around 30 hours a week on sessions and structured learning, the rest on data migration, change management and stakeholder work. A traditional rollout takes 2,337 hours from fifteen people instead.
Hire for it. The trait is identifiable, and recruiting deliberately beats waiting for it to appear. The ISU Selection Pack includes position descriptions for an internal appointment and an external hire.
One, for most organisations. A single ISU keeps ownership unambiguous and decisions fast. Across multiple departments, nominate a champion in each major function to feed in requirements and support adoption in their area, with one primary ISU still leading. Separate sites or entities with genuinely different processes may warrant an additional ISU, phased across the rollout. More full-time ISUs than you need blurs ownership.
Thirty minutes a week, every week, for the ISU's presentation to the mentor. Plus timely decisions on the things only management can decide.
Yes. Because the system is configured, tested and validated well before the date, cutover is a scheduled event measured in minutes. Your ISU performs it under your mentor's guidance.
Your ISU becomes your Continual Improvement Officer, cutting manual work and extending what you get from Business Central and the wider Microsoft toolset.
Yes. Scope the implementation upfront and you get one price and one delivery date. Under 20 weeks, in full, on budget.
Ready to Get Started?
Whether you're a Microsoft Partner or a Business Owner, DIY-ERP can help you achieve ERP success faster and more affordably.