Legacy Systems Engineering

Course Length:



$1990 per person


This three-day course provides a systemic overview of how to execute Brownfield development projects, which improve or replace legacy systems. Modern development programs are increasingly characterized by Brownfield development efforts in both the military and commercial domains.

Most SE training treats systems as “clean-sheet,” (or Greenfield) developments. This class explores how to tailor the SE process for legacy system Brownfield development efforts. Participants will learn the necessary adjustments to the fundamental principles of Systems Engineering necessary when dealing with the unique aspects of Brownfield development efforts. Practical information and tools are provided that will help the participants deal with issues that inevitably occur in the real word. Extensive in-class exercises are used to stimulate application of the course material. Each student will receive a complete set of lecture notes and an annotated bibliography.

What you will learn:

  • The key characteristics of Brownfield development efforts
  • How to effectively plan and manage a Brownfield development effort
  • How Brownfield development affects your requirements and design
  • How to effectively integrate your systems in a Brownfield development environment
  • Effective verification and validation in a Brownfield development environment
  • The latest Brownfield lessons learned

Who should attend:

  • Prime and subcontractor engineers who procure Brownfield systems.
  • Suppliers who produce and supply Brownfield systems.
  • Technical team leaders whose responsibilities include Brownfield development.
  • Program and engineering managers that oversee Brownfield systems development efforts.
  • Government regulators, administrators, and sponsors of Brownfield procurement efforts.
  • Military professionals who work with Brownfield systems.

Course Outline:

  1. Brownfield Concepts and Principles. Key Brownfield Concepts. Brownfield Development Compared and Contrasted with Greenfield Development. Key Challenges and Expected Benefits of Brownfield Development. Brownfield Lessons Learned.
  2. Brownfield Influences on Requirements Development. Tailored and New Approaches to Requirements. Stakeholder Requirements and Measures of Effectiveness. System Requirements and Measures of Performance. Flow Down of Requirements to Brownfield Systems.
  3. Brownfield Influences on Architecture and Design. Architecting Principles. Architectural and Design Strategies for Brownfield. Supporting the Inherent Constraints of the Legacy Brownfield Systems. Dealing with the Unique Interdependencies of Overlapping Brownfield System Lifecycles. Support for Ongoing Change and Evolution of the Brownfield Systems.
  4. Brownfield Life Cycle Considerations. Reliability, Maintainability, Availability. Supportability/Logistics, Usability/Human Factors. Training. System Safety. Security/Survivability. Producibility/Manufacturability. Changeability. Commonality. Interoperability. Affordability. Disposability/Sustainability.
  5. Brownfield Influences on Integration and Test. Integration, Verification, and Validation Approaches in a Brownfield Environment. Strategies for Dealing with the Independent Nature of the Brownfield Systems. Acceptance of Brownfield systems.
  6. Brownfield Influences on Technical Management. Planning, Monitoring, and Control. Risk and Decision Management, Configuration and Information Management. Course Wrap-up.


If this course is not on the current schedule of open enrollment courses and you are interested in attending this or another course as an open enrollment, please contact us at (410)956-8805 or ati@aticourses.com. Please indicate the course name, number of students who wish to participate. and a preferred time frame. ATI typically schedules open enrollment courses with a 3-5 month lead time. For on-site pricing, you can use the request an on-site quote form, call us at (410)956-8805, or email us at ati@aticourses.com.


  • David D. Walden, ESEP, is an internationally recognized expert in the field of Systems Engineering. He has over 30 years of experience in leadership of systems development as well as in organizational process improvement and quality having worked at McDonnell Douglas and General Dynamics before starting his own consultancy in 2006. He has a BS degree in Electrical Engineering (Valparaiso University) and MS degrees in Electrical Engineering and Computer Science (Washington University in St. Louis) and Management of Technology (University of Minnesota). Mr. Walden is a member of the International Council on Systems Engineering (INCOSE) and is an INCOSE Expert Systems Engineering Professional (ESEP). He is also a Senior member of the Institute of Electrical and Electronics Engineers (IEEE) and a member of Tau Beta Pi. He is the lead editor of the INCOSE SE Handbook and author or coauthor of over 50 technical reports and professional papers/presentations addressing all aspects of Systems Engineering.

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