About

A working life spent at the intersection of technology, organisations and judgement.

Andreas Rieger is an independent executive advisor. For more than twenty years he has worked alongside CEOs, founders, boards and investors on decisions in which technology, organisation and strategy could not sensibly be separated from one another.

Andreas Rieger, portrait
For more than twenty years I’ve watched technology change. What has kept me curious all this time is the way organisations decide what to do with it. Most conversations begin with technology. The interesting part usually starts a few minutes later.

He is not an implementation partner. He does not sell software. He does not represent vendors. His perspective comes from more than two decades of observing consequential technology decisions across many organisations, and from noticing which ones proved sound over time.

His practice is deliberately small. A handful of engagements each year, chosen for the quality of the question rather than the size of the budget. The work is quiet and deliberate. It grows out of conversation, careful analysis and written reflection when a thought needs to be held still. It takes as long as the decision at hand requires.

Before gathering his work under his own name, Andreas published much of it through two specialised editorial publications that were earlier homes for his writing and now continue as curated archives. Commerce Guru followed digital commerce, platform strategy and the organisational questions that sit around consequential technology decisions. The Prompt Monk turned to artificial intelligence, executive judgement and the changing relationship between technology and organisational capability. Both continue to provide context and depth within the same body of work. New essays now appear first on this site. Selected pieces are later referenced or republished there.

Fields of work

  • Digital Commerce
  • Technology Strategy
  • Artificial Intelligence
  • Organisational Transformation
  • Executive Decision Making

Working with

  • Chief Executives
  • Founders
  • Executive Boards
  • Private Equity
  • Supervisory Boards

Position

  • Independent
  • Vendor free
  • No affiliate relationships
  • No paid endorsements

Publications

Decision Architecture, cover

Book, 2026

Decision Architecture

How Organisations Decide in an Age of Technological Acceleration

Originally published by ThePromptMonk

View publication