Can you please direct me where I can find a comprehensive description of an Investment Program vs. an Acquisition Program?
Based on your question, it appears you are asking for descriptions and relevant policy for capital investment programs and defense acquisition programs.
A capital investment program is one in which a capital asset, such as Automated Data Processing Equipment (ADPE), non-ADPE equipment, software development, and minor construction is purchased. This is done when the capital asset meets the Department’s long-range planning and programming objectives, when it satisfies a documented need that cannot be met as effectively and efficiently by existing equipment and facilities, and when the acquisition of the capital asset efficient and effectively accomplished the objective for which it is justified, among other requirements. For more information, please consult the DOD Financial Management Regulation, Volume 2B. Chapter 9: Defense Working Capital Fund Budget Justification”, section 1.4. https://comptroller.defense.gov/Portals/45/documents/fmr/Volume_02b.pdf
The FY22 DWCF Operating and Capital Budget contains examples and is located here:
DEFENSE WORKING CAPITAL FUND
A defense acquisition program is one that delivers an effective, suitable, survivable, sustainable, and affordable solution to the end user. This includes programs to develop, modify, or acquire equipment, software, or services. Defense acquisition programs are guided by the DoD 5000.01 and 5000.02, among other policies. For more information, please consult the Adaptive Acquisition Framework website.