Legacy Modernisation
Legacy Modernisation: The Moment an Insurer Stops Accepting Delay as Normal
On Monday morning, a sensible change is requested.
A pricing rule needs adjusting.
A product feature needs updating.
A broker journey needs simplifying.
A claims workflow needs tightening.
Everyone agrees it should happen.
But inside many insurers, the real question is not whether the change is right. It is whether the business can absorb it. One system depends on another. Data sits in different places. Testing becomes negotiation. A release window is weeks away. Operations prepare a workaround before the change even starts. By the time the insurer is ready, the market has already moved.
That is the real cost of legacy.
Not just the maintenance bill. Not just technical debt. But the way it teaches the organisation to accept delay as normal. The urgency for core transformation has never been greater because legacy systems slow innovation, raise operational cost, and hinder customer experience. Deloitte’s 2026 insurance outlook makes the wider point that changing customer expectations, broker consolidation, and the importance of modernisation are reshaping the market.
And the market is not slowing down to accommodate that delay.
Broker expectations are rising. Customers compare insurers with the best digital experiences they have anywhere, not just within insurance. AI is moving from curiosity to capability. EIOPA says nearly two-thirds of European insurers are already using generative AI, but most are still at proof-of-concept stage. That is a telling signal in itself: ambition is moving faster than operational readiness.
So what does life look like after modernisation?
It does not look like a technology programme on a slide finally reaching green status.
It looks like an insurer that can move.
The same pricing change comes in, but this time the business can assess impact quickly. The architecture is more modular. Data is easier to access. Hidden dependencies are lower. Product, operations, and technology are not improvising around the core just to make sensible change happen. Modernisation that improves agility, speeds product and service change, and helps insurers take ease of doing business to the next level for brokers and customers. It also highlights how underwriting is moving away from manual, rule-bound approaches towards automated, AI-supported decisioning built on better data and flow.
That is the part many insurers miss.
Modernisation is not about replacing the old system. It is about changing what the business becomes capable of doing. Faster product change. Cleaner claims flow. Better underwriting support. More trusted data in the workflow. AI that has somewhere real to live because the underlying process is stable enough to support it. Without that, insurers do not just carry legacy cost. They carry legacy speed. And legacy speed is becoming a commercial disadvantage.
The insurers that win over the next few years will not necessarily be the ones with the biggest transformation programmes.
They will be the ones that stop treating change as disruption and start treating it as a normal business capability.
That is what modernisation should really deliver.
Not a new core for its own sake.
A more adaptable insurer.
If legacy is still slowing product change, claims flow, data access, or broker experience in your organisation, the most useful question may not be “When do we replace the system?” It may be “What is the legacy estate stopping us from doing today?” That is usually the best place to start.
Sources
- Deloitte, 2026 Global Insurance Outlook on changing customer expectations, broker consolidation, and the importance of modernisation.
- EIOPA, February 2026 survey on GenAI adoption in European insurance, showing widespread usage but mostly at proof-of-concept stage
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