Lesson 4 of 6·7 min read

How AI Solutions Are Created 🏗️

AI is making its way into your daily work. But how do AI tools actually arrive at a company? There are three paths — and understanding them helps you contribute to discussions and choose the right tools for your tasks. The Build vs. Buy vs. Partner Framework provides a clear overview.


🎯 What You'll Learn

  • The three paths to AI implementation and their trade-offs
  • A clear cost estimate for each option
  • The 5-question checklist before every AI decision
  • Common mistakes to avoid

The Build-Buy-Partner Framework 🔀

🔨 Build (In-house Development)

AspectDetails
When to chooseCore competency, unique competitive advantage, highly sensitive data
Investment€150,000–500,000 (team + infrastructure + maintenance)
Time-to-Market6–18 months
Ongoing costs€5,000–20,000/month (cloud, maintenance, team)
ExampleCustom recommendation engine for an online shop

💡 Tip: Build only makes sense when AI becomes your core competency. For support processes, Buy is almost always the better choice.

🛒 Buy (Off-the-shelf Solution)

AspectDetails
When to chooseStandard problem, quick start, no in-house AI team
Investment€0–10,000 (setup, integration)
Time-to-Market1–4 weeks
Ongoing costs€20–500/month per user (SaaS license)
ExampleChatGPT Team, Copilot, Zendesk AI, Intercom AI

🤝 Partner (Consulting + Implementation)

AspectDetails
When to chooseComplex problem, missing expertise, strategically important
Investment€30,000–200,000 (consulting + implementation)
Time-to-Market2–6 months
Ongoing costs€1,000–5,000/month (support, further development)
ExampleAI strategy with a tailored solution

📖 Definition: Total Cost of Ownership (TCO) includes not just acquisition costs but also ongoing costs for maintenance, updates, training, and operations over the entire usage period.


The 5-Question Checklist ✅

Answer these questions before every AI decision:

  1. Is the problem clearly defined? — No clear problem, no good solution. "We want to use AI" is not a problem. "We spend 40 hours/week on manual data entry" is.

  2. Is there enough data? — Some AI solutions need proprietary data (custom models), others work immediately (LLM-based tools). Clarify what your approach requires.

  3. Is ROI measurable? — Define concrete KPIs before starting: time saved in hours, error reduction in percent, cost savings in euros.

  4. Who maintains the system? — AI is not set-and-forget. Who monitors quality? Who adjusts prompts? Who responds to errors?

  5. Is compliance ensured? — EU AI Act, GDPR, industry-specific regulations. Check before starting, not after.

⚠️ Caution: Don't skip this checklist. Most failed AI projects don't fail because of technology — they fail due to unclear goals, missing data, or insufficient change management.


Avoiding Common Mistakes 🚫

  • Seeing AI as a silver bullet — AI solves specific problems, not all of them
  • Starting too big — Better to begin with a quick win than to overhaul everything at once
  • Starting without training — The best tools are useless if you don't know how to use them effectively
  • Underestimating costs — Ongoing costs (API, maintenance, support) often exceed the initial investment
  • Scaling without a pilot phase — Prove it first, then roll it out

🏢 Real-world example: A mechanical engineering company wanted to train its own LLM (Build) for technical documentation. Estimated cost: €400,000. After consulting (Partner), they discovered that a customized RAG system with Claude API (Buy) at €800/month met 90% of requirements.


📋 Summary

  • Build for core competencies and unique competitive advantages
  • Buy for standard problems and quick starts (recommended for most SMEs)
  • Partner for complex strategic projects with missing expertise
  • Always run through the 5-question checklist before investing
  • Start small, measure, and only scale with proven success

🎯 Exercise: Think of a concrete task in your area of work and evaluate it with the 5-question checklist. Which approach (Build/Buy/Partner) would fit best?


Next lesson: Risks and Limitations of AI — what you absolutely need to know.