EY refers to the global organization, and may refer to one or more, of the member firms of Ernst & Young Global Limited, each of which is a separate legal entity. Ernst & Young Global Limited, a UK company limited by guarantee, does not provide services to clients.
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National Security & Defense
The global national security and defense environment is undergoing a fundamental shift due to intensifying geopolitical rivalry, accelerating hybrid and cyber threats, rapid technological disruption and mounting pressures on national resilience. Threats are faster, more complex and increasingly directed at infrastructure, industry and society.
Solving your complex challenges
- Transforming the enterprise
- Workforce and talent
- Supply chain resilience
- Cyber and data security
CHALLENGE
Modernizing for a complex world
Defense organizations face rising geopolitical uncertainty, rapid technological change and higher readiness demands. Legacy systems, fragmented data and rigid operating models limit agility — slowing response times, complicating cross-domain integration and undermining operational advantage.
HOW EY CAN HELP
EY helps defense organizations modernize the enterprise by aligning strategy, technology and operations. We support leaders in building integrated, data‑driven organizations that can respond faster, operate more efficiently and sustain long‑term mission advantage.
- Enterprise integration: supporting enterprise functions to map, manage and align capability dependencies across programs, infrastructure, industry and workforce
- Operational performance: applying our Performance to Plan framework to improve readiness and performance across major defense capabilities
- Enterprise technology transformation: modernizing core systems to scale across logistics, sustainment and command
- Value creation: applying our Enterprise Reimagined framework to orchestrate and realize value across the organization
FEATURED
How the Performance-to-Plan strategy uses data to modernize operations for the US Navy
Read this case study to learn how the Navy uses the Performance to Plan (P2P) solution to leverage digital leading practices for better operational outcomes. Read more (via ey.com US)
CHALLENGE
Building a mission-ready workforce
Defense organizations face ongoing challenges in recruiting, retaining and developing the skilled personnel needed to deliver mission readiness and national security outcomes.
HOW EY CAN HELP
EY workforce planning, capability modelling and talent management methodologies help defense organizations address chronic personnel shortages and critical skill gaps to build military capabilities that can sustain long-term mission advantage.
- Smarter recruitment: redesigning recruitment models, value propositions and data‑driven pipelines to accelerate hiring and improve retention
- Optimized workforce deployment: creating an enterprise view of military, civilian and reservist talent to place the right skills in the right roles at the right time
- Improved lived experience: shaping career models, rewards, training and support programs that help personnel and families feel valued and focused
- Productivity and cost efficiency: applying targeted workforce redesign, artificial intelligence (AI) and automation to unlock productivity and manage costs
FEATURED
How the US Navy is developing its workforce of the future
Human capital transformation modernizes the end-to-end employee experience to compete for tomorrow’s top-tier talent. Read more (via ey.com US)
CHALLENGE
Building resilient and sovereign supply chains
Defense organizations require resilient, sovereign supply chains that help maintain access to critical inputs — particularly under growing geopolitical, industrial and cyber pressure.
HOW EY CAN HELP
EY helps defense organizations strengthen end‑to‑end supply chain resilience through AI‑enabled assurance, early‑warning capabilities and third‑party risk analysis — improving visibility, decision‑making and operational confidence.
- Improved threat awareness and resilience: identifying and anticipating supply chain vulnerabilities linked to cyber, economic and geopolitical risks, while reducing critical dependencies and sovereignty exposure
- More confident, risk‑informed decisions: strengthening data‑intensive supply chains and logistics through multidisciplinary expertise, augmented by advanced AI‑driven analysis
- Greater asset availability and reliability: using predictive, AI‑driven insights to manage the full lifecycle of critical assets, anticipate maintenance needs and reduce disruption from equipment failure
FEATURED
Is the Australian defense industry ready to meet supply chain challenges on the horizon?
A 2025 EY survey of current and prospective suppliers suggests defense supply chain resilience is strong, although the experience differs between direct (Primes) and indirect (Tier 2 and Tier 3) suppliers. Read more (via ey.com Australia)
CHALLENGE
Protecting digital assets and mission critical operations
Digitalization has exposed new areas of vulnerabilities for defense organizations across cyber, data and AI‑enabled systems that adversaries are increasingly quick to exploit.
HOW EY CAN HELP
EY teams help defense organizations protect digital assets and operations while strengthening mission readiness and sovereign capabilities across cyber, data and AI.
- More secure and resilient enterprise systems: delivering cybersecurity, threat detection and response services that protect sensitive information while improving operational resilience and mission performance
- Sovereign control of critical data: designing and implementing sovereign cloud solutions that keep sensitive defense data secure, compliant and contained within domestic borders
- Stronger resilience of critical digital infrastructure: assessing risks to essential defense and national security services, and advising on safeguards against hybrid threats and cyber attacks
- Trusted and governed use of AI: applying responsible AI frameworks, digital twins and governance guardrails to ensure autonomous systems are trusted, governed and embedded within assured, human‑led processes
FEATURED
Smart Arsenal: The Role of AI in Military Asset Management
The integration of AI in military asset management ensures offers transformative potential that cannot be ignored. Read more (via ey.com US)
EY-Parthenon: Transformative strategy and transactions – solutions that work in practice, not just on paper.
EY Partner Ecosystem
EY harnesses a connected ecosystem of strategic alliances and partnerships to co-create value and deliver comprehensive technology solutions and business outcomes for our clients.
Global experience. Local impact.
EY teams, drawing on a deep global network of multidisciplinary professionals, support governments and security organizations across regions facing shared — and local — challenges. Explore our latest thinking from around the world to see how our experience in national security and defense is brought to life in local markets, helping institutions anticipate risk, adapt faster and operate with confidence in an increasingly volatile world.