Over the past 20 years, we have taken failed TSPR programs and have created Case Studies out of them  For example, the Air Force Expeditionary Combat Support System (ECSS), a One Billion dollar disaster, is one of our case studies.  ISA301 and ISA320 are the home of these case studies.

The department is moving to an Agile-DevSecOps process/practice.  This process builds and Acq Strategy as follows:  Define your Product Vision (could be an ICD and/or CDD), Define your Product Roadmap of what capability increments will be delivered over time. Define your Release Plan of what features will be delivered over time. Then, the Acquisition Strategy falls out--includes your Cyber Strategy, IP Strategy, TEMP, etc...