Nationwide AI: AWS Extends Union with UK Building Society

Nationwide, the world's largest building society, has extended its partnership with AWS in a move that could signal the growing importance of cloud infrastructure in traditional financial services.

The expanded agreement is designed to accelerate digital innovation and improve experiences for the mutual's 17 million customers.

The partnership represents a continuation of Nationwide's digital transformation journey, with the building society is deepening its reliance on cloud technology to enhance both customer and colleague experiences through AI-powered solutions and agile service delivery.

Nationwide is building on its established use of Amazon Connect, AWS's cloud-based contact centre platform, by extending its application of AI to support real-time decision-making and personalised interactions across branch and digital channels.

The service is intended to help employees deliver faster, more informed customer service while maintaining the strict security and regulatory standards required in financial services.

Suresh Viswanathan, Group Chief Operating Officer at Nationwide, says: "As we continue our digital transformation, we need cloud technology that can support our ambition to deliver better customer experiences, while keeping safety and security at the forefront.

"With AWS, we can better support our frontline colleagues to help improve member experience and deliver better outcomes for over 17 million customers."

Tackling fraud with cloud technology

One area that has received a boost from the AWS collaboration is Nationwide's Call Checker service.

Launched in 2025 and powered by Amazon Connect, the tool enables customers to verify that they are speaking to a genuine Nationwide colleague, providing an important safeguard at a time when impersonation fraud remains a significant concern.

According to Nationwide, impersonation scams account for 17% of all incidents reported in 2024 and 2025.

By integrating cloud-based AI tools, the building society is strengthening its defences against sophisticated fraud attempts while also streamlining the customer journey.

AWS underpinning its core infrastructure, Nationwide can roll out new customer-facing innovations faster and at greater scale.

Building infrastructure for digital banking

The expanded agreement between AWS and Nationwide places cloud scalability, speed and resilience at the centre of the building society's digital strategy.

The partnership allows the mutual to deploy new capabilities quickly, adapt to growing demand and maintain consistent operational performance across its extensive branch network and digital platforms.

For AWS, this collaboration reinforces the growing role of cloud and AI in enabling traditional financial institutions to keep pace with digital-native challengers and fintech disruptors.

"By consolidating and modernising their workloads on AWS, Nationwide can accelerate innovation, enhance operational resilience and deliver the digital experiences their members expect – all while maintaining the security and compliance standards that are paramount in financial services," says Alison Kay, VP and Managing Director of AWS UKI.

"We are thrilled to support Nationwide in unlocking the transformative power of cloud technology, while equipping their teams with training and skills that will drive meaningful impact for both customers and colleagues."

Upskilling for cloud adoption

As part of the renewed agreement, AWS will work closely with Nationwide to upskill employees through access to AWS training resources, with a particular focus on cloud computing and AI.

This forms part of plans to future-proof Nationwide's workforce, ensuring colleagues have the digital expertise needed to leverage cloud technologies effectively across departments.

The training aligns with a broader trend across the fintech and financial services landscape, where organisations are investing heavily in AI and cloud literacy to sustain innovation and service excellence.

The collaboration demonstrates how established mutuals are adopting modern cloud technologies to deliver the hyper-personalised, always-on experiences customers increasingly expect.

By combining its customer-first ethos with AWS's technical expertise, Nationwide is aiming to set benchmarks for secure, intelligent and inclusive digital banking.

The partnership suggests that cloud modernisation is becoming essential for the fintech sector, as financial institutions work to balance digital acceleration with trust, compliance and inclusion.

Collaborations like this one could show how technology alliances can bridge legacy systems and future-ready digital ecosystems.