Australian Military Bank’s digital transformation: How a defence focused institution became a leader in modern banking
Written by Darlene Mattiske Wood, Chief Executive Officer of Australian Military Bank, and Theo Albers, AVP and Head of Business – ANZ at Infosys Finacle, this article explores how Australian Military Bank has transformed itself from a traditional Defence-focused mutual into a digitally advanced institution built for a highly mobile membership.
Written by Darlene Mattiske Wood, Chief Executive Officer of Australian Military Bank, and Theo Albers, AVP and Head of Business – ANZ at Infosys Finacle, this article explores how Australian Military Bank has transformed itself from a traditional Defence-focused mutual into a digitally advanced institution built for a highly mobile membership. Through cloud technology, platform thinking, and a strong focus on member experience, the bank is redefining what modern mutual banking can look like.
For more than 65 years, Australian Military Bank (AMB) has served as the financial backbone for Australia’s Defence community, making it the nation’s longest‑serving Defence financial institution. Established in 1959 and originally founded as the Navy (Civil Staff) Co‑operative, the bank has evolved significantly over the decades, eventually rebranding as Australian Military Bank in 2015. Today, AMB supports over 52,000 members, manages more than $1.45 billion in member funds, and operates branches at major Defence bases across the country.
This unique Defence‑focused mandate forms the foundation of AMB’s identity, and it has become the bedrock upon which the bank is now building a powerful digital future.
Authors
A leadership moment: Rebuilding for growth
When Darlene Mattiske‑Wood took over as CEO in 2020, AMB was facing a few structural challenges. Growth had slowed, and the bank needed a modern operational model that could serve an increasingly digital‑first membership, especially Defence personnel who rely heavily on secure, accessible financial services whether at home, deployed, or on base.
AMB had just transitioned to the Infosys Finacle core banking stack and adopted a SaaS‑based model, laying the groundwork for transformation. Mattiske‑Wood describes this moment as pivotal, enabling the bank to rebuild and modernize its operating foundation. This strategic shift soon delivered tangible results : by 2024, AMB earned a place on Forbes’ Best Banks in the World list, and in 2025, the bank was named Customer‑Owned Bank of the Year - a powerful testament to its accelerated transformation and the journey further reinforced by multiple other industry accolades.
The power of a cloud‑native core
AMB’s early adoption of a SaaS‑based core proved to be a defining decision in its modernization journey. According to Mattiske‑Wood, migrating the bank’s core systems to the cloud dramatically strengthened its digital backbone and improved the experience for members.
The benefits were immediate and profound:
1. Greater Agility: The bank is now able to roll out new products and services at a much faster pace, which are critical for a mobile Defence population that relies on seamless access across channels.
2. Reduced Dependence on Legacy Infrastructure: System upkeep has become simpler and more efficient, freeing internal teams to focus on innovation instead of maintenance.
3. Lower Total Cost of Ownership: The move from capital-heavy systems to a predictable subscription model has significantly improved cost management and scalability.
4. Improved Digital Experiences: From enhanced mobile banking to faster service updates, the cloud environment has helped AMB deliver seamless, frictionless, 24/7 digital accessibility, essential for Defence members stationed across the globe.
This transformation has strengthened AMB’s ability to innovate rapidly while maintaining the operational resilience required by Australia’s Defence community.
Opening the door to Banking‑as‑a‑Service (BaaS)
With its modern architecture and mutual heritage, AMB now sees significant potential to extend its digital platform as a Banking‑as‑a‑Service (BaaS) offering to other credit unions and mutuals. This shift reflects a broader industry trend, where collaboration, shared infrastructure, and technology‑enabled efficiencies are becoming essential to sector resilience.
Smaller financial institutions, which often struggle to invest in cutting‑edge digital capabilities, stand to benefit from AMB’s cloud‑native platform. By accessing scalable, secure, and high‑performance digital services without major capital expenditure, they can remain competitive in a fast‑evolving landscape.
For AMB, offering BaaS is more than a commercial opportunity. It is a chance to strengthen Australia’s broader mutual banking ecosystem, encouraging collaboration, enabling innovation, and helping mutuals focus on what they do best: nurturing strong member relationships and strengthening community impact. This model can pave the way for a more inclusive, future‑ready financial sector.
Harnessing AI to enhance human connection
As a member‑owned bank, AMB places extraordinary importance on trust, personal connection, and deep understanding of its members’ needs. In this context, technology, particularly AI, is not seen as a replacement for human relationships but as a tool to enhance them.
AMB’s philosophy is clear: AI should streamline routine processes, surface personalized insights, and free staff to focus on meaningful interactions. By automating what is transactional, the bank gives its teams more time to provide empathetic, member‑focused support.
At the same time, AMB holds firm to its values around privacy, security, and transparency. Any AI or advanced analytics introduced must reinforce, not compromise, its commitment to safeguarding member data and keeping the human element central. This thoughtful approach ensures that even as the bank adopts next‑generation capabilities, its personal touch remains firmly intact.
A partnership built on trust and strategic alignment
A recurring theme in AMB’s transformation is the strength of its partnership with Infosys Finacle. For CEO Darlene Mattiske‑Wood, the relationship goes far beyond technology procurement. It is rooted in resilience, trust, and mutual accountability.
In a rapidly shifting banking landscape, AMB expects its technology partners to anticipate industry shifts, innovate ahead of market needs, and stand shoulder‑to‑shoulder with the bank on its strategic journey. As she notes, the last thing a CEO needs is uncertainty around the foundational technology supporting the institution’s success. Stability, foresight, and commitment are non‑negotiable.
Theo Albers, Head of Business Australia at Infosys Finacle echoes this sentiment, recognizing AMB as a valued client since 2017 and highlighting the bank’s progress in delivering secure, frictionless digital experiences to its Defence community members. Together they continue to collaborate on next‑generation capabilities, from AI to advanced analytics to future‑ready BaaS models.
Leading the next era of mutual banking
Australian Military Bank’s transformation is a powerful example of how a long‑established institution can reinvent itself through cloud modernization, human‑centric innovation, and trust‑driven partnerships.
With a modern digital backbone, a growing platform strategy, and a steadfast commitment to personal connection, AMB is poised to lead the next era of mutual banking in Australia.
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