At the heart of every transformation is trust. We listen, challenge, and walk the path with you.
Dr. Harald Dreher · Founder and Managing Director
Meet the founder
Harald Dreher founded Dreher Consulting in 1992, after years inside large corporations where software was blamed for what was really a decision problem.
Two rules came out of that. They are still the same two today:
The decision first, then the software.
Whoever defines the engagement carries the responsibility. The recommendation is written for the managing director, not for procurement.
More than three decades on, we still run the firm ourselves. Over 1,200 projects have confirmed the same finding: when an ERP project fails, it was rarely the system — it was a decision nobody owned.
What we do
Independent ERP consulting, digitalisation and process optimisation for the DACH Mittelstand — we hold no software licences and take no vendor commission, so the recommendation is not carrying anyone else's margin.
Whether to replace, what with, and what the change is worth. Evaluation without a vendor margin. A decision that holds up in front of management.
Where digital work pays — and where it does not. Processes and data first. Benefit after go-live, not promised before it.
Making visible how the company actually works. Automation only where the rules are stable. Adoption during delivery. Organisation before the agent, not after.
Our Story
Dr. Harald Dreher founded Dreher Consulting in 1992, because inside large corporations the software was being blamed for what was a decision problem. The two rules from that time still govern every engagement. What has changed is the subject: systems and agents now decide alongside us. So the rules hold in 2026 not as tradition — they hold because the old mistake is coming back.
QUALITY · TEST METHODS
By the relevance of the analysis.We go as deep into processes as a sound decision and its implementation require. Models are a means, not a deliverable. Only what changes a requirement, a priority or a decision counts.
By the traceability of the recommendation.A vendor's assurance is not evidence. We separate functions that are described, capabilities that have been demonstrated in practice, and assumptions that remain open. What the recommendation rests on stays visible — and how much uncertainty remains.
By honesty about our own limits.Facts, assumptions and judgements are kept apart. Risks do not disappear behind a score. Where information is missing, we name what needs clarifying. Where budget, time or resources do not fit, we say so before anything is signed.
For more than 30 years, owner-led Mittelstand firms have trusted Dreher with the decisions that matter most. These are their words — owners, managing directors and marketing leads of recognisable DACH names.
Our team brings together experienced consultants, industry specialists and digital experts who are united by a shared commitment to delivering real results. With deep knowledge in ERP, digitalisation and AI-driven transformation, we work collaboratively to solve complex challenges and create lasting value for our clients. Get to know the individuals behind our success.
Benefit from 3 decades of experience in IT strategy, digitalisation, ERP consulting and process optimisation.
Head of Business Unit Sustainability and Supply Chain Management
Skills: Business & Process Architecture, Balance Score Card 4.0, BPM, Process Mining & Optimisation, Process Intelligence, Continuous Improvement (CIP) and Sprint CIP
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Skills: ERP Selection and Implementation, Requirement Engineering, Project Management, Process Modelling
Skills: Logistics Planning, Project Management, Process Planning, Warehouse Management Systems, Commissioning/Go-live/RampUP/Hypercare
Skills: ERP Selection and Implementation, Requirement Engineering, Project Management, Process Modelling