NAB expands cloud-first approach to boost customer innovation

20 October 2025
Technology and Innovation

NAB has bolstered its delivery of faster, safer and more reliable digital banking by expanding its multi-cloud strategy – bringing Google Cloud into its ecosystem alongside Microsoft Azure and Amazon Web Services (AWS). 

In doing so, NAB has become the first major bank in the Southern Hemisphere to scale across the world’s three largest cloud providers, with almost 90% of its applications now running on cloud.

NAB Executive Enterprise Technology, Steve Day said the multi-cloud milestone marked a strategic leap - unlocking the unique strengths of the three global technology leaders to drive better outcomes for NAB’s customers. 

“We’ve been on a multi-year transformation, moving from an on-premises environment to an insourced, cloud-first model to deliver better availability and experiences for our customers,” Mr Day said. 

“When we started out in 2018, we had just 2% of our apps on cloud and by the end of this calendar year we’ll be at 90%, making us one of the global leaders for a bank of our size and scale.

“What this means is that our architecture is now built to run anywhere, portable and scalable. Most importantly for our customers, our systems are now significantly more reliable for them.

“We’ve had an 89% reduction in critical and high outages and delivered a significant improvement in our speed to deploy new products and features for our customers. 

“By integrating Google Cloud, we’ve added another dimension to our tech stack – equipping our technologists with world-class tools to deliver new and improved services to market faster and with greater reliability.”  

In addition, NAB has extended its relationship with Microsoft through to the end of 2031, which sits alongside the decade-long collaboration with AWS, NAB’s primary cloud provider for core NAB applications, as part of the bank’s multi-cloud strategy.   

“This shift reduces our concentration risk, enabling us to seamlessly move critical services between platforms in real time. It gives us the flexibility to adapt quickly and more opportunities to innovate for our customers,” Mr Day said

The approach and investment in learning and training programs is also helping the bank attract top engineering talent.

“Engineers want challenge, purpose and the chance to make an impact. Working across three hyperscale platforms in one organisation is rare – and it’s a magnet for the best minds in tech. 

“We’re building a bank that’s ready for the future - powered by cloud, driven by colleagues, and focused on delivering for our customers.”