In-House Solutions vs. QM Software – The TCO Calculator for Management Systems

"We'll just build it in-house with our IT team – it'll be cheaper in the long run."

We hear this often from management system leads who want to professionalize their company's interactive management system but are hesitant to invest in professional QMS software. The reason: it's too expensive.

A TCO analysis often reveals that a generic solution like SharePoint, Confluence, or similar alternatives with a few add-ons is actually more expensive in practice than specialized software.

The common misconception: License costs vs. total costs

Since SharePoint is already available in many companies via Microsoft 365, and Confluence is often part of the Atlassian stack, there are no initial acquisition costs. Open-source solutions also sound like they cost nothing at first. While that may be true for the license, what is almost always forgotten is that the license is only a small fraction of the total costs.

Cost driver 1: Customizing SharePoint and similar platforms

SharePoint and similar tools were not built for management systems. If you want to use them to create a digital quality manual, a process portal, or an interactive management system, you have to rebuild the platform from the ground up—either internally via IT or externally through consultants. Both paths involve significant hidden costs.

These are the typical areas that require customization:

• System structure and navigation for processes and documents

• Permission and role concepts for different user groups

• Features for approval workflows, version history, change comparisons, read receipts, process modeling, standard mapping, or risk management

• Interfaces with existing systems

Add-ons and plugins are particularly tricky. Some have one-time fees, while others have recurring costs that drive up operating expenses year after year. With open-source solutions, you also have to factor in hosting and infrastructure costs, which are often overlooked at the start.

Cost driver 2: IT as a bottleneck

Many companies learn this the hard way: internal IT teams are already busy with day-to-day operations, and the management system is rarely at the top of their priority list. What seems like a small adjustment to a quality manager ends up in a ticket queue, where it often sits for weeks or even months. The result is a management system that goes live half-finished and never truly reaches completion.

Some companies try to bypass this by hiring external consultants for the platform. While this solves the bottleneck in the short term, it creates a new dependency and continues to drive up ongoing costs.

Cost driver 3: The system requires constant updates

This is the core problem with a self-built solution: it is an ongoing process with no end date, because requirements are constantly changing.

For example, rapid developments in artificial intelligence—such as AI-assisted process creation, AI-powered Q&A for employees, or intelligent search—are increasingly becoming competitive differentiators. And someone has to develop these in-house if you choose a custom solution.

That is why we keep seeing the same pattern: companies initially decide against a professional solution, only to return six months later. The IT department was at capacity, the QM team was frustrated, and the costs they hoped to save had already been incurred.

What the TCO comparison reveals

Based on extensive customer experience, we can identify a typical pattern of cost factors that are consistently underestimated:

For 500 users, building your own solution can result in around €420,000 in additional costs over 5 years compared to Q.wiki by Ariadne.

Do the math yourself – with our TCO calculator

Generic platforms like SharePoint, Confluence, or open-source solutions are a great choice for many collaboration scenarios. However, they are generally not suitable for a dynamic, compliant, and future-proof management system.

And one more question should be included in every decision paper: Who bears the risk if the custom-built solution fails to scale—technically, functionally, or regulatorily? With an expert solution like Q.wiki by Ariadne, this risk lies with the provider; with a self-built solution, it lies with the company itself.

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Our TCO calculator provides detailed sample calculations and allows you to enter your own figures to determine which solution is more cost-effective for you.