As the Singapore Armed Forces (SAF) continues its rapid transition into a Third Generation fighting force, DSTA has adopted strategies and systems engineering practices to manage the complexities of the SAF's System of Systems (SoS) to meet new and emerging threats. In systems engineering, ‘ilities’ are non-functional requirements that define the robustness and effectiveness of the system design in responding to uncertainties.

DSTA plays an important role in ensuring that the fundamental ‘ility’ of interoperability is achieved for networked operations within the SAF’s SoS-es. Leveraging international best practices and published standards by the North Atlantic Treaty Organisation and the USA, DSTA developed a set of enablers to ensure interoperability among systems as part of operationalising the SoS Realisation Framework. With the framework, disparate defence systems can be morphed into a networked and interdependent SoS optimally, empowering the SAF to realise an advanced integrated fighting force.

In addition, the suite of interoperability enablers has served to guide DSTA in acquiring and developing component systems that can integrate and work well together to achieve the desired capability outcome in a larger network. Beyond interoperability, DSTA has achieved other ‘ilities’ such as operational and design flexibility which strengthen the robustness of SoS-es for the SAF.