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Services
Legacy System Migration Planning
Helping organisations modernise outdated technology without disrupting essential operations.
- Reduces risk of downtime and data loss
- Aligns legacy decommissioning with future-state architecture
- Minimises disruption through staged, well-communicated plans
- Ensures business continuity while enabling future innovation
- Supports cost-saving and vendor consolidation strategies
Legacy systems underpin some of the most business-critical processes—and that’s what makes replacing them so complex.
ASU’s Legacy System Migration Planning is built for this challenge. We work with your teams to assess technical, operational, and cultural readiness for change. Our consultants map dependencies, analyse service risk, and design phased migration strategies that ensure zero disruption to essential operations.
We support CIOs, CTOs, and programme leads in balancing the risks of doing nothing against the costs of modernisation. We don’t just plan migrations—we future-proof operations.Whether it’s replatforming a decades-old system, integrating with cloud-native tools, or retiring multiple legacy estates, we help you modernise with confidence.
We see migration not as a single moment—but a structured journey of transition, assurance, and evolution.
A government agency relied on a 15-year-old mainframe to manage critical citizen services. ASU partnered with internal architecture and delivery teams to map the system's dependencies, validate cloud-based alternatives, and develop a phased migration strategy. Over 18 months, core functionality was re-architected, legacy contracts retired, and the department transitioned to a secure, scalable platform—without service interruption.
Legacy systems can become a drag on innovation, security, and scale—but replacing them is rarely straightforward. Our Legacy System Migration Planning service helps organisations transition critical infrastructure without disruption. We balance risk, cost, and complexity to design migration strategies that are scalable, structured, and sustainable.
We work closely with IT, security, and operations teams to understand constraints, map dependencies, and select the right replacement or augmentation strategy—whether it’s full replatforming, phased retirement, or hybrid integration.
