Today almost all aspects of our national defence are connected; whether it’s the desktop computers managing military logistics, or military weapons and platforms - such as tanks, ships, and planes. All these systems are connected, and vulnerable to security threats. As the speed of warfare increases and as emerging technologies further underpin the warfighter's capabilities, the requirement to evolve both rapidly and securely will be key to maintaining a capability edge. Technological advantage will be achieved through the ability to rapidly develop cyber resilient software. The adoption of mature DevSecOps practices and toolsets, and a Zero Trust architecture are key enablers to this imperative.