Enterprise architecture, AI & cloud consulting
Complex technology.
Clear business outcomes.
I’m Stuart McGrogan. Through STUARTMCGROGAN LTD, I help business leaders simplify technology, control cost and turn transformation plans into measurable results — combining enterprise architecture, practical AI and cloud expertise with hands-on delivery.
Consultancy · Advisory · Interim · Fractional leadership
Hertfordshire · London · UK & international
25+ years in technology leadershipUK & international delivery
Commercial judgement. Technical depth.From the boardroom to delivery teams.
Experience across complex organisations
ToolstationTravis PerkinsDeutsche BankTUISt Andrew’s Healthcare
Consulting services
Technology advice that leads to action.
Enterprise architecture, fractional CTO and CIO services, AI governance, cloud cost optimisation and transformation support through STUARTMCGROGAN LTD.
Enterprise architecture consulting
Connect business strategy to target architecture, capability mapping, a funded technology roadmap and practical governance.
Explore the serviceFractional CTO & CIO services
Independent technology leadership for boards, investors and teams through growth, transformation or a leadership transition.
Explore the serviceAI, cloud & automation consulting
Prioritise useful AI and automation, build responsible AI governance and improve cloud economics with a clear business case.
Explore the serviceLegacy modernisation & cloud migration
Assess the estate, rationalise applications and plan what to migrate, modernise, retain, replace or retire.
Explore the serviceTechnology due diligence & assurance
An independent view of acquisition risks, technical debt, programme viability and M&A integration priorities.
Explore the servicePlatform engineering & DevSecOps
Improve developer experience and delivery with reusable platforms, CI/CD, Infrastructure as Code and security built in.
Explore the serviceSelected case studies
Results that make the difference.
Selected examples from my career in cost reduction, security and technology transformation. These describe my individual experience before STUARTMCGROGAN LTD was incorporated, not contracts delivered by the new company.
Retail • Supply Chain£20M+
Toolstation / Travis Perkins
Enterprise architecture, Cloud, digital, data, cyber and operating-model leadership supporting growth from approximately £250M to £1B annual revenue.
International • Retail3 + 4 months
Toolstation France, Belgium & Netherlands
Three-month international estate assessment followed by a four-month implementation phase.
Infrastructure • Retail50%
Travis Perkins Data Centre Consolidation
Three-month analysis followed by a six-month consolidation / migration programme.
Cloud • Cyber Security2.4 → 4.7
Cloud Security & DevSecOps
Built Cloud Security and DevSecOps capability from the ground up.
AI • Cloud • Data300% ROI
Cloud, Data & AI Innovation
Cloud funding, faster MVP delivery and selected AI use cases tied to measurable value.
Why work with me
Commercial priorities.
Practical technology decisions.
Senior judgement, clear accountability and the technical depth to turn a decision into delivery.
A business case before a platform choice.
Connect investment to revenue, cost, service and risk. Prioritise achievable early returns, with a 12-month payback target where the business case supports it.
Someone who stays close to the work.
Translate board priorities into architecture, delivery plans and clear ownership. Work alongside product, engineering, operations and security teams to make progress.
The right decision for your business.
Assess cloud, SaaS, AI and existing platforms on their economics, resilience and business fit. Simplify the estate and make the trade-offs clear.
How I work
From business priority to measurable progress.
Agree what success looks like, make the trade-offs visible and give people a plan they can own.
Understand
Business outcomes, constraints, risk, economics and stakeholder priorities.
Assess
Capabilities, applications, data, integrations, platforms and infrastructure.
Decide
Target-state options, disposition decisions and investment choices.
Mobilise
Sequenced roadmaps, product outcomes, governance and delivery ownership.
Assure
Lightweight Design Authority, reusable patterns, controls and executive visibility.
Experience
Enterprise depth. Cross-sector perspective.
I lead STUARTMCGROGAN LTD, providing independent enterprise architecture, technology advisory and transformation leadership. Based in Hertfordshire, I work with clients in London, across the UK and internationally.
I’ve led technology change across retail, financial services, healthcare, travel, logistics and the public sector. My experience spans business, data, applications, infrastructure and security — connecting the whole enterprise rather than optimising one part in isolation.
I work with executives and delivery teams, build architecture capability and coach future architects from engineering, operations, business analysis, data and security backgrounds.
BusinessStrategy • Capabilities • Operating Model
DataPlatforms • Governance • AI • Analytics
ApplicationsPortfolio • SaaS • APIs • Integration
TechnologyCloud • Infrastructure • DevSecOps
GovernanceStandards • Design Authority • Assurance
Engagement models
The right level of support.
Advisory Sprint
A focused architecture assessment, options, recommendations and next-step roadmap.
Fractional Leadership
Regular senior technology leadership for growth, transformation or executive transition.
Interim / Programme
Hands-on architecture leadership for transformation, modernisation, Cloud, data or operating-model programmes.
Permanent Leadership
Permanent employment enquiries are personal opportunities for Stuart McGrogan, separate from company consultancy engagements.
Senior architecture, IT and transformation roles with a clear business mandate and the opportunity to build lasting capability.
Interactive architecture explorer
Make the decision visible.
Explore an example decision path for cloud, AI, modernisation or governance.
Simple Cloud & AI
Start with the business outcome and estate economics before adding another platform.
01Business outcome
02Inventory
03Rationalise
04Migrate / retain
05FinOps
06Measure value
OutcomeLower cost • fewer platforms • stronger resilience
AI value path
Select AI use cases by measurable benefit, then introduce data and responsible-AI guardrails.
01Business problem
02Value case
03Data readiness
04Guardrails
05PoC / MVP
06Scale
OutcomeProductivity • customer • revenue • service benefit
Estate modernisation
Use evidence to decide the right disposition for every workload.
01Discover
02Dependencies
03Risk / cost
04Disposition
05Roadmap
06Assure
OutcomeMigrate • modernise • SaaS • retain • retire
Architecture governance with pace
Centralise what must be consistent and federate decisions teams can safely own.
01Strategy
02Principles
03Patterns
04Team decision
05Design Authority
06Learn
OutcomeFaster decisions • less rework • clear accountability
Strategy-aligned architecture examples
A clear route from current to future state.
An illustrative architecture example: connect growth, efficiency and resilience to practical technology changes.
Example business strategy
Grow digital revenue, reduce operating cost, improve fulfilment speed and strengthen resilience.
Revenue growth
Operational efficiency
Faster change
Better customer experience
Risk & resilience
Current state example
A fragmented estate where the technology model is making the business strategy harder to achieve.
- Disjointed web, store and service journeys
- Limited personalisation and weak analytics feedback
- Siloed applications and brittle point-to-point integrations
- Slow onboarding of new products and services
- Duplicated data and inconsistent reporting
- No clear AI prioritisation or governance
- Legacy hosting, overlapping platforms and high support cost
- Manual controls and limited automation
Why this matters
Business strategy is constrained by complexity, slow decision-making, higher cost and limited scalability.
Future state example
A simplified, business-aligned architecture designed to support growth, speed and cost-effective operations.
- Unified digital and operational journeys
- Reusable customer capabilities and real-time insight
- Rationalised applications with API-led integration
- Clear product ownership and faster change delivery
- Trusted data platform with governed AI use cases
- Decision support linked to measurable business value
- Simplified Cloud and platform estate with automation
- Lower run cost, stronger resilience and clearer controls
Business fit
The target architecture supports digital growth, better service, lower complexity, faster delivery and stronger resilience.
Transition roadmap example
The diagram view can also show how to move from current state to future state in a way executives can fund and teams can execute.
01AlignAgree business outcomes, scope and success measures
02AssessMap systems, data, dependencies, costs and risks
03DecideRetain, retire, simplify, migrate, replace or automate
04DesignCreate target and transition architectures
05MobiliseSequence delivery, ownership, governance and investment
06Realise valueTrack cost, speed, resilience and business outcomes
Executive outcome
A good architecture diagram becomes a decision tool — not just a picture — by linking strategy, investment, delivery and business benefits.
Architecture in motion
How architecture connects the decisions.
A visual guide from business priorities to delivery. Scroll across to explore each journey.
Business advisory & expert networks
Independent insight for important decisions.
Advisory based on first-hand operating, architecture and leadership experience.
Advisory themes
Enterprise ArchitectureTechnology StrategyCloud AdoptionAI & Responsible AIRetail & E-commerceSupply Chain & LogisticsData & AnalyticsCyber / DevSecOpsITSMData-centre ConsolidationSaaS / Vendor SelectionProduct Operating Models
Typical assignments include executive briefings, expert interviews, technology diligence, architecture reviews, vendor evaluation, transformation challenge and decision support.
Cloud and AI principle: simplify the estate, minimise ongoing cost, automate repetitive work and only adopt new capability where it delivers a clear business outcome.
Advisory panel experience
Extensive experience participating in expert-network and advisory engagements, including:
AlphaSightsExpert consultations & decision support
GLGExpert network / professional insight engagements
ArbolusExpert community and advisory engagements
Network names are shown descriptively only. No endorsement, employment relationship or client identity is implied. Engagement details remain confidential.
Let’s talk
What needs to change
in your business?
A technology decision, transformation challenge or senior leadership opportunity — let’s explore where I can help.
For consultancy and advisory engagements, you will be working with STUARTMCGROGAN LTD. View company and registered-office information.
30 minutes · Google Meet · No obligation
Share your priorities, discuss the challenge and agree whether there is a useful next step.