DoW, considerably reducing du- plication. Core Design Components • Regulations, Standards, and Guid - ance: a tool-agnostic core with ex - tensions for widely used modeling environments. Because tools and tool versions change over time, the architecture must also preserve compatibility with the software versions and languages needed to support future modular design and sustainment. • Reusable Libraries and Common Components: Shared building blocks such as database connec - tors, logging services, user inter - face elements, validation routines, and other utility functions. • Reliability Support: uses concur - rent design patterns, message passing, and containerization to reduce bugs, isolate failures, and increase compatibility. • Modular Microservices and Con - tainers: provide the foundation for scalability, maintainability, and integration across organizations. Strategic Value of the ARA Strategically, the ARA strength - ens conformity across acquisition programs by establishing a common architectural foundation and improv - ing interoperability among systems, services, and mission partners. It ad - ditionally aligns acquisition efforts with departmentwide objectives, ac - celerates timelines by reusing proven components and patterns, promotes greater competition in sustainment and replacement-part solutions, and provides a single source of truth for common unclassified models and components. Operationally, the ARA enables flexible, cost-efficient scaling across acquisition programs and provides a centralized repository of reusable model components. It also encour - ages faster development by allowing smaller, focused teams to work more effectively, improving fault tolerance while decreasing long-term costs.
The ARA can serve as the “rules of the road” for acquiring systems in the digital age. This structured yet flexible approach will substantially increase acquisition speed and quality.
In practical terms, the ARA func - tions as a “digital marketplace” for acquisition—akin to a Home Depot or Lowe’s for engineering models and components. It offers the following: • Modular microservices and con- tainers • Embedded regulations, standards, and guidance • Reusable libraries and common components • Built-in support for reliability and long-term sustainment Engineering teams across the DoW and Defense Contractors can brow- se, select, and integrate proven build - ing blocks before program initiation This allows faster operating delivery while minimizing risk and duplication Why a Common ARA Matters The ARA will set the foundation for dramatically increasing acquisition speed . Existing Government Refer - ence Architectures (GRAs) are com - monly tailored to individual services or programs. While that customiza - tion can meet local needs, it also reduces reuse, limits interoperabil - ity, and increases duplication across the Department. The ARA builds on the strengths of those efforts while establishing a common enterprise- level foundation that improves con - sistency, enables broader integration, and clarifies the ARA’s central role. Customized GRAs support partic - ular organizational needs but often create silos. A common ARA increases model reuse. This shared foundation strengthens interoperability while still allowing service-level implemen - tation through GRAs.
The ARA establishes common rules and standards for digital acquisition, enabling interoperability across DoW branches and with contractors. It also provides a central repository for digi - tal engineering artifacts, models, and data. It supports lasting sustainment by testing and qualifying replacement parts. The ARA resides at the highest level of the DoW’s digital ecosystem, anchored on the future Digital Back - bone. From strategy through design, development, production, and sus - tainment, it provides overarching guidance across the full acquisition life cycle while preserving necessary flexibility for individual branches and programs. The architecture uses a clear three-layer structure: 1. Top Layer —ARA Enterprise-wide common denominators and un - classified reusable assets. 2. Middle Layer —GRAs Service- specific instantiations that corre - spond with and inherit from the ARA. Classified and unclassified components reside here. (De - pending on the product portfolio, mission, or leadership, this layer can be refined further). ؘ Department of the Army ؘ Department of the Navy ؘ Department of the Air Force 3. Bottom Layer —CRA. Industry im - plementation layer where con - tractors develop solutions that conform to relevant GRAs (and thus the ARA). This layered model approach cre - ates a strong shared repository of re- usable assets accessible across the
18 DEFENSE ACQUISITION MAGAZINE | SEPTEMBER –OCTOBER 2026
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