Author: Brendan Thorpe, Customer Success Manager at Auriga
Across the banking sector, there is strong alignment around the goal of delivering seamless customer experiences. Institutions aim to enable customers to move smoothly between mobile, web, branch, ATM and contact centre, with each interaction informed by a consistent, unified view of the relationship. However, this ambition continues to fall short in practice.
The issue is not a lack of digital intent, but the continued reliance on legacy core systems. In 2026, omnichannel banking is still being held back by technology stacks designed for a different era. These environments were built around products, batch processing and siloed servicing models, rather than real-time, customer-led journeys. While many banks have modernised their interfaces, the underlying operating model often remains fragmented, slow to evolve and difficult to integrate.
As a result, legacy infrastructure remains a significant strategic challenge. It not only increases cost, but also limits a bank’s ability to connect channels, maintain consistent customer context and deliver the continuity that customers now expect. Addressing these challenges is now essential for institutions aiming to deliver a seamless omnichannel experience.
Technical debt continues to slow transformation
Technical debt remains a major barrier to progress. Many institutions are operating with tightly coupled platforms, extensive customisation, overlapping middleware and years of point-to-point integrations. This accumulated complexity means even relatively small changes can take considerable time, involve multiple dependencies and introduce risk.
Although banks continue to launch new digital capabilities, progress is often uneven as new features are layered onto fragile foundations. This can lead to improvements in one channel, creating issues in another, resulting in data inconsistencies, and leaving frontline teams without a fully integrated view of the customer. This can create a transformation that may appear visible on the surface, but is limited in depth. These underlying limitations become more apparent in the way banks struggle to deliver a seamless experience across channels.
Breaking Down Channel Silos to Improve Customer Experience
The effects of legacy design are most evident in the persistence of channel silos. When a journey started on one channel cannot be completed in another, or when customer information is not consistently updated across touchpoints, the experience becomes fragmented. For example, a customer might update their contact details through the mobile app, only to find that the branch staff still have the old information during their next visit. This disconnect creates confusion and requires repeated effort from the customer.
Moreover, with increased customer expectations, banks are no longer compared only with competitors in the sector, but with leading digital experiences across industries. Customers expect continuity, speed and relevance regardless of how they engage.
This means transformation cannot be measured solely by channel availability or functionality. The key measure is whether the experience feels connected. If customers are required to repeat information, restart journeys or navigate disconnected channels, then a true omnichannel model has not been achieved.
Customers engage with a single brand. When systems fail to share context, the organisation appears fragmented, with direct implications for customer satisfaction, commercial outcomes and reputation. For this reason, omnichannel banking must be treated as a strategic priority across the business, not solely as a technology initiative.
Turning Legacy Challenges into Competitive Advantage
Legacy dependency is also influencing competition across the sector. A divide is emerging between institutions that can effectively manage their legacy environments and those that cannot.
Neobanks and digital challengers benefit from having been built without physical infrastructure. They rely on third-party providers for physical service delivery, resulting in a lighter cost base and significantly less technical debt. However, this also reduces their need to address complex omnichannel challenges.
Traditional banks, by contrast, must integrate both physical and digital channels. While this adds complexity, it also presents an opportunity. Institutions that can successfully connect these channels can deliver richer, more context-driven experiences that digital-only providers are less able to replicate.
Achieving this requires addressing the limitations of legacy systems, making modernisation a competitive imperative rather than simply a technical objective.
A pragmatic approach to modernisation
Most banks recognise the need to reduce reliance on legacy systems, but a full replacement is rarely practical as core platforms are deeply embedded in products, processes, controls and regulatory frameworks. These systems support high volumes and extensive business logic, making wholesale replacement too risky and disruptive. As a result, many institutions are adopting a more incremental approach. Rather than waiting for large-scale transformation, they are introducing integration layers, service layers and orchestration capabilities to improve experiences in the near term.
Through the use of APIs, reusable services and modern integration patterns, banks can decouple customer-facing channels from some of the constraints of the core. This enables improvements in digital journeys, self-service capabilities and assisted interactions across branches and contact centres, even while legacy systems remain in place.
This approach leads to measurable progress without requiring immediate large-scale change. It also supports a gradual reduction in dependence on legacy environments.
Modernisation should be viewed as an ongoing capability rather than a one-off initiative. Banks need to focus on simplifying architecture, improving data accessibility, reducing duplication and enabling continuous adaptation.
Those that succeed will be the institutions that take a disciplined, practical approach, connect channels effectively and embed continuous improvement into their operating model.
