A transition state that lasts twelve months can shape customer service, broker relationships and operating costs for longer than the target platform takes to build. Treating it as a temporary inconvenience leaves the business exposed to poor service, avoidable workarounds and delayed benefits.
Most platform migration programmes invest heavily in designing the target state. They define operating models, processes, integrations, reporting structures and customer journeys. Far fewer apply the same discipline to the period during which legacy and target platforms must coexist, even though employees, brokers and customers may operate within it for months or years.
To evaluate the true impact of a migration strategy, steering committees need to challenge the transition state directly.
How long will two platforms need to coexist? How long will operational teams and brokers need to support both environments? How will complaints spanning both systems be investigated? How will policy adjustments be managed? How will reporting be produced during the transition period? How will brokers and customers experience the change?
These questions are often more revealing than discussions about migration tooling or reconciliation thresholds. They expose the practical consequences that determine whether the business can operate effectively while the migration proceeds.
The strongest migration programmes I have seen spend as much time designing the transition state as they do designing the target state. They recognise that managing coexistence requires architectural and operational decisions, rather than relying on additional training and manual workarounds to absorb the friction.
Designing for coexistence
A well-designed transition state begins with clarity over how work will flow across the two environments.
Operational teams need a reliable way to identify where each policy sits. Complaints teams need access to the information required to investigate cases that span both platforms. Finance and regulatory reporting teams need a consolidated view of data, with clear ownership of reconciliation and adjustment processes.
Distribution partners also need a workable experience. Asking brokers to understand the insurer’s internal migration structure transfers programme complexity outside the organisation. Wherever possible, the transition design should shield brokers and customers from the underlying platform split.
Insurers can use temporary abstraction layers to reduce this burden. Unified interfaces can give employees a consistent entry point across both platforms. Federated APIs can provide common access to services or data. Consolidated reporting pipelines can bring information together without expecting users to reconcile multiple sources manually.
These solutions may be temporary, but that does not make them unnecessary. Where the transition will last several years, temporary architecture can deliver meaningful operational and commercial value. It can reduce training demands, limit workarounds and protect the customer and broker experience while the portfolio moves.
The investment decision should reflect the expected duration and complexity of coexistence. Building an abstraction layer for a transition lasting several weeks may add little value. Expecting staff and brokers to tolerate fragmented systems for several years is unlikely to be a credible operating strategy.
For insurers planning a major platform migration, the goal is to reach the target platform with accurate data while protecting service, trading relationships and operational control throughout the journey.
Every migration strategy creates a transition state. The organisations that handle migrations well design that state consciously, fund it realistically and govern it with the same discipline applied to the final operating model.
Every migration is different, but many of the challenges are familiar. If you are planning a migration and would value an independent perspective on strategy, transition design, architecture or delivery risk, come and talk to us at Simplify Consulting.
Chris Moore
Head of Solution Architecture
