Enterprise Architecture Overhaul

The Challenge

A national infrastructure provider lacked a cohesive enterprise architecture, resulting in fragmented technology investments that failed to deliver expected business value. Different business units pursued their own technology initiatives without coordination, leading to duplicated efforts, incompatible systems, and wasted resources.

Without a clear target state architecture, technology decisions were made in isolation, creating technical debt and integration challenges. The organisation needed a comprehensive enterprise architecture to guide strategic investments and ensure alignment with business objectives.

Our Approach

ISG was engaged to develop a comprehensive enterprise architecture that would provide a foundation for strategic technology decisions. Our approach involved:

• Business Capability Mapping: Documented the organisation's business capabilities and their technology enablers to establish a common language for architecture discussions.
• Current State Analysis: Assessed the existing technology landscape, identifying redundancies, gaps, and opportunities for rationalisation.
• Target State Design: Developed a target-state enterprise architecture aligned with the organisation's strategic objectives and industry best practices.

The Solution

We delivered a comprehensive enterprise architecture framework including:

• Business capability model mapping all organisational functions
• Application portfolio rationalisation identifying consolidation opportunities
• Target state architecture defining the future technology landscape
• Three-year technology roadmap with prioritised initiatives
• Architecture governance framework for ongoing decision-making

The Results

The enterprise architecture overhaul provided clear direction for technology investments and delivered immediate value through rationalisation:

• 3-year roadmap delivered with clear milestones and investment priorities
• $12M in waste avoided by identifying and stopping duplicated initiatives
• 100% executive buy-in with architecture embedded in governance processes
• Improved decision-making with clear principles and standards guiding technology choices