The Reverse Greenfield Approach
A practical alternative to all-at-once SAP S/4HANA migration, co-developed by Nitin Antoon with Jim Hamilton and Dr. Jaideep Motwani, and set out in From Legacy to Innovation: The Automotive Reverse Greenfield.
The Reverse Greenfield concept presents an approach to enterprise modernisation designed for organisations that need to reduce technical debt without replacing every part of their existing environment at once. Rather than treating digital transformation as a single large replacement programme, it considers how organisations can gradually separate innovation from legacy complexity and modernise in controlled stages — continuing to leverage existing ECC investments while constructing future architectures in parallel.
The book uses an automotive context — the fictional Falcally Automotive and its “white knight” Michael — to explain how enterprise architecture, business transformation and financial decision-making can be combined into a practical roadmap, addressing the central question facing enterprise IT leaders: what is the business case for an S/4 migration?
The approach combines
- Clean-core architecture
- Selective modernisation
- Cloud-native extensions
- Business-process redesign
- Phased SAP S/4HANA transformation
- Technical-debt reduction
- Financial prioritisation
- Organisational change
Praise for the book
“The Automotive Reverse Greenfield is a great read. It focuses on the extremely important topic of digital transformation in SAP landscapes. It challenges the reader to consider a fresh approach and learn from the choices and strategies presented in this book.”Dr. Tamas Szirtes
“By weaving the narrative of Falcally Automotive and its white knight Michael, this book transforms complex SAP S/4HANA migration concepts into an engaging and accessible journey. The introduction of the Reverse Greenfield Strategy offers a fresh, practical alternative to traditional migration approaches.”Vishal Jain
“Legacy to Innovation addresses the many challenges and decisions that all organizations must face with aging technical platforms. It is an easy read that will enlighten and educate those who have never traversed the complex journey of an information systems project.”Jeff Kurburski
From Legacy to Innovation was covered by AP News for introducing the Reverse Greenfield approach.
Read the book
Co-authored with Jim Hamilton, a former IT executive at General Motors, and Dr. Jaideep Motwani, Professor & Chair of Management at Grand Valley State University.