Holger Michael Keller

Holger Michael Keller

Visionary for Digital Networking | Google Workspace Expert | Strategic Advisor

Holger Michael Keller (born 1962) is a distinguished IT pioneer and entrepreneur who has been developing innovative software solutions and pushing the boundaries of digital collaboration since 1989. His career is an early symbiosis of demanding academic theory and high-caliber research practice, which laid the foundation for his current expertise in Google technologies, data sovereignty, and networked collaboration. He develops solutions that combine technical excellence with the strategic narrative of human-AI collaboration.

psychology Core Competencies & Expert Status

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Google Workspace & AI Automation

Specialist for migrating complex business processes to cloud environments and training others in Google Workspace (G Suite) and Google Apps Script. Focus on effective integration of AI for gradual automation of information flows and revolutionizing productivity.

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Business Process Reengineering

Specialist for analyzing, visualizing, and restructuring complex business processes (UML) with the aim of increasing efficiency and automating decentrally operating teams.

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Software Engineering & Architecture

Extensive experience in object-oriented system analysis, reengineering of legacy systems, and deep practice in Full-Stack Development (Google Apps Script, JavaScript, HTML) for web applications.

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Strategic Management & Data Sovereignty

Many years of experience in founding and managing IT companies as well as strategic consulting for shaping a secure, self-determined digital future.

history_edu Pioneer & Entrepreneurial Resilience

His profile is that of a "Digital Architect and Structural Engineer": He relies on the foundation of real project successes and the creation of sustainable structures rather than purely academic titles.

  • Research-oriented Practice (1984–1990): Research assistant in technically innovative projects at the Institute for Machine Tools and Industrial Engineering (WBK) as well as at Digital Equipment (CEC) and Standard Elektrik Lorenz (SEL).
  • Pioneer in the DACH Region (iBO.App): Development of a holistic system for organizing networked teams long before online collaboration became an industry standard.
  • Long-term Business Solutions: Development of a Retail Controlling System for Esprit de Corp.
  • Crisis Management & Leadership: Deputy CEO of KANTHOR Software-Werkzeuge AG. In 1997, as a single father of three children and AG board member, he mastered the balancing act between career and family.

work_history Professional Career (Excerpt)

Since 2010

Freelance Computer Scientist; Focus on Google Workspace, Migration, and Mobile Asset Development.

2001 – 2003

Business Development Manager at Entory AG (now NTT Data).

1997 – 1999

Deputy CEO of KANTHOR Software-Werkzeuge AG.

1991 – 1996

Head of Department for Commercial Systems and Marketing/Sales at Computec GmbH.

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"Your Data. Your Life. Your Freedom."

Holger Michael Keller understands technology as a tool for strengthening human freedom of decision. His goal is a networked world that promotes prosperity and security without sacrificing the sovereignty of the individual.

article Articles by Holger Michael Keller

Illustration of the AI chasm

AI Revolution: Why 'Too Late' Is Just a Feeling

Have you missed the boat? We show you how to bridge the two AI chasms and go from hesitator to AI orchestrator.

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A pilot steers a digital cockpit

Digital Sovereignty: From Passenger to Pilot of Your Transformation

The goal of the journey: +50% revenue and -20% effort through mastery in collaborative intelligence.

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Illustration on the topic of global collaboration

At the Crossroads of Humanity: Why Collaboration Is the Most Important Skill in 2026

Global crises are often a failure of project management. Learn how a collaborative mindset minimizes existential risks.

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Symbol for data security and identity protection

Digital Identity 2025: Why Google Workspace Is Your Shield

AI manipulations and identity theft are real dangers. Learn how to proactively protect your digital assets.

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Illustration of digital illusion and filter bubbles

Escape the Digital Illusion: Why Authenticity Is Key

In a world of filter bubbles and attention economy, ASSISTENT.digital shows a way to genuine, human collaboration.

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Strategic start and scaling

BOARDING: Your Strategic Start – Inspired by Tech Giants

Why we invest in your potential like Scale AI and the Thiel Fellowship to prepare you for hyperscaling.

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Illustration of sustainable technology

Increase Productivity, Overcome Habits: How Sustainable Is AI with Google?

AI consumes resources. Learn why we rely on Google as a partner to increase your productivity in an ecologically responsible way.

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Digital Order vs. Chaos

Order in Digital Chaos: The Operating System for Your Success

Version conflicts and data silos slow down your company. We show you how Google Workspace creates systemic order.

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Illustration of the AI revolution

Navigate Through the AI Revolution: How to Assert Yourself in Change

AI does not replace jobs, it transforms them. Learn how augmentation extends human capabilities and redefines roles.

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Career development in the digital age

Your Career Kickstart in the AI Age: Solving the Experience Paradox

How do career starters gain experience when AI takes over entry-level tasks? We show you the way to the 'job-ready' candidate.

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Illustration of the AI turning point

Navigating the AI Turning Point: Why Pure Automation Often Fails

40% of AI projects fail. Learn what we can learn from the Klarna case study about the AI productivity paradox.

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Illustration of the AI chasm

Are You Ready for the AI Revolution? Why 'Too Late' Is Just a Feeling

Have you missed the boat? We dispel the myth and show you the way across the two AI chasms.

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Data analysis of the job market for AI professions

The Prompt Engineer: From Hype Job to Universal Core Competence

Why 'Prompt Engineer' is disappearing as a job title but becoming indispensable as a skill for every knowledge worker.

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Humanity and Technology Hand in Hand

Between Technology and Humanity

In a time of rapid technological advances, the question arises: What does this mean for us as humans? Will we become superfluous in a world full of artificial intelligence?

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Artificial Intelligence Brain

Does AI Surpass Humans?

A recent study shows that AI has passed the Turing Test. What does this mean for the future of human interaction?

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Teamwork and Technology

More Than Just Tech

How ASSISTENT.digital helps you achieve your goals - with human support and AI.

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Learning and Growth

Your Key to Lifelong Learning

At ASSISTENT.digital, we are convinced that lifelong learning is the key to success in today's fast-paced world.

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Brand Identity and Technology

More Than Just Technology

How ASSISTENT.digital helps you unfold your unique 'Brand DNA' and integrate it into your business processes.

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Knowledge and Networking

More Than Just Bits and Bytes

How ASSISTENT.digital helps you use knowledge and grow in a complex world.

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Data Protection and Human

You Don't Have to Protect People's Data, But Protect People from Their Data

We live in an era of data overload. At ASSISTENT.digital, we believe that the human must be at the center of data protection.

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Onboarding and Teamwork

Revolutionize Your Onboarding with HI & AI-Supported Solutions

Onboarding is often tedious and time-consuming. At ASSISTENT.digital, we have developed a duplicable and customizable onboarding service.

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Future and Technology

From the 'New Power of the Gulf' to Your Revolutionized Productivity

The AI revolution is in full swing. Gemini 2.5 Pro in Google Workspace is your key to benefiting from this development.

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A graphic showing how Gemini is integrated as a central assistant in Google Workspace applications like Docs, Sheets, and Gmail.

More Than Just a Chatbot: How Gemini Really Changes Your Work in Google Workspace

Gemini is not a separate tool, but an intelligent partner deeply anchored in the apps you use every day.

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Future of Work

The Future of Work Is Now

We are in the midst of a revolution. Artificial Intelligence (AI) is changing the world of work at a rapid pace.

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Everyday Office Life and AI

AI Revolution in Everyday Office Life

In an era where Artificial Intelligence (AI) is no longer just a pipe dream but a tangible reality, we are facing a paradigm shift.

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Three young women working together on a laptop.

The True Opportunity of a Good Start: Why Optimal Onboarding Is Crucial.

A structured start is not a cost factor, but the most important investment in your employees and projects.

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Business Success and AI

The Role of AI for Business Success of the Future

The development of artificial intelligence is not just a technological trend, but a fundamental shift in the way companies must operate.

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Illustration of AI as a horizontal layer

The AI Revolution: Why Jeff Bezos Is Betting Big on Artificial Intelligence

Jeff Bezos invests 95% of his energy in AI. What does this horizontal shift mean for your business?

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Digital Future and Navigation

ASSISTENT.digital: Your Navigator in the Digital Future

The world of work is undergoing rapid change. ASSISTENT.digital supports you in actively shaping the opportunities of digital transformation.

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