Reducing Legacy Costs by 47% via Cloud Migration

The Challenge

Our client, a major enterprise organisation, was struggling with a 20-year-old legacy infrastructure that had become increasingly costly to maintain. The aging systems were creating operational inefficiencies, security vulnerabilities, and limiting the organisation's ability to innovate and respond to market changes.

The existing infrastructure required significant manual intervention for routine operations, with escalating maintenance costs and a growing technical debt that made each update more complex and risky than the last.

Our Approach

ISG partnered with the organisation to develop and execute a comprehensive cloud-first modernisation strategy. Our approach focused on three key pillars:

• Assessment & Planning: Conducted a thorough analysis of existing systems, identifying quick wins and prioritising workloads for migration based on business impact and technical complexity.
• Phased Migration: Implemented a staged migration approach that minimised disruption to business operations while progressively moving critical systems to the cloud.
• Security & Compliance: Ensured all migrated systems met or exceeded existing security and compliance requirements, with enhanced monitoring and automated security controls.

The Solution

We designed and implemented a strategic cloud-first architecture that addressed the organisation's immediate needs while providing a foundation for future growth. Key components included:

• Migration of 20+ critical business systems to cloud infrastructure
• Implementation of automated scaling and resource optimisation
• Deployment of modern DevOps practices and CI/CD pipelines
• Enhanced disaster recovery and business continuity capabilities
• Comprehensive staff training and knowledge transfer

The Results

The transformation delivered significant, measurable outcomes within the six-month implementation window:

• 47% reduction in operational costs through optimised resource utilisation and elimination of legacy maintenance overhead
• 99.9% uptime achieved through improved infrastructure resilience and automated failover capabilities
• Enhanced security posture with improved compliance monitoring and automated security controls
• Increased agility enabling the organisation to deploy new capabilities in days rather than months