Why most architecture decisions fail in enterprises
A practical breakdown of where things go wrong and how to fix them.
Coming soon
Subbu Lakshmanan · Enterprise Architecture & AI
Enterprise Architecture & AI for real-world outcomes
Helping organisations make better technology decisions in complex environments.
Led 100s of application migrations, dozens of large transformations, and 6+ enterprise-scale AI initiatives.
Based in Melbourne · Working Globally
20+ years
In enterprise technology
100s
Of application migrations delivered
Dozens
Of large-scale transformations
6+
Enterprise AI transformations
Trusted
In complex enterprise environments
About
Architecture leadership that puts the business first.
I'm a hands-on Enterprise Architecture leader who has spent the last two decades helping banks, telcos, retailers and platform businesses turn ambitious strategy into systems that actually run in production. I've worked across the US, Australia and with clients around the world — long enough to know the patterns, recent enough to keep up with where the industry is heading.
My approach is simple. Start from the business outcome. Strip away the noise. Pick the smallest design that holds up under real constraints — cost, risk, regulation, people — and grow from there. Simplicity is the ultimate sophistication.
I'm TOGAF-certified, comfortable across AWS, Azure, GCP and OCI, and well versed in regulatory environments like APRA, GDPR and government control frameworks. Along the way I've also mentored architects and engineering leaders, and supported early-stage startups as a technical and architecture mentor.
Expertise
What I bring to the table
Six areas where I've delivered, repeatedly, for organisations that can't afford to get it wrong.
Enterprise Architecture Leadership
TOGAF-certified, practical and grounded. I start from the simplest thing that works and explain it in plain language — to the board, to engineers, to everyone in between. No ivory tower, no 80-page reference architectures nobody reads.
AI in the Enterprise · RAG, Agentic, LLM
Specialist in retrieval augmented generation, agentic workflows and LLM training and fine-tuning. Helping leaders separate the hype from the hard problems and ship AI that earns its keep.
Cloud Strategy & Migration
Stack-neutral and proficient across AWS, Azure, GCP and OCI. Lift-and-shift, re-platform or rebuild — I'll match the pattern to your reality, not to a vendor's pitch deck.
Integration & Migration of Core Systems
Deep experience integrating and migrating CRM, ERP, HRMS and Finance platforms. The unglamorous work that quietly decides whether a transformation succeeds.
Regulatory & Compliance
Very familiar with APRA prudential standards, GDPR, and government regulatory controls. I design for compliance from day one rather than bolting it on at the end.
Digital Transformation
End-to-end transformation programs across banking, telecommunications, retail and travel. Strategy, target architecture, roadmap and the operating model to make it stick.
Engagements
Trusted by teams at
A snapshot of organisations I've delivered architecture, cloud and transformation work for across the US and Australia.
ANZ Bank
Telstra
JPMorgan Chase
Wells Fargo
Walmart
Equifax
Expedia
+ early-stage startups
Engagements span banking, telecommunications, retail, travel, credit and information services. I've also supported early-stage startups as a technical and architecture mentor.
Work with me
Work with me
I contribute through leadership, architecture thinking, and sharing real-world lessons.
Speaking & Training
I speak about Enterprise Architecture, AI, and lessons from real-world delivery. I also run training sessions to help teams strengthen architecture thinking and decision-making.
- Conferences and industry events
- Internal leadership and architecture sessions
- Practical, experience-driven training
10+
Keynotes, panels and conference talks delivered to audiences of architects, engineering leaders and senior executives across Australia and the US.
Story-led and interactive — closer to a campfire than a lecture hall.
Coaching & Mentoring
Helping the next generation of architects find their feet.
Alongside the day job, I coach architects, engineering managers and technology leaders who want to grow into senior roles. The format is interactive and story-driven — I share what I've seen work (and fail) across two decades, and we apply it to whatever you're navigating right now.
Architects stepping up
From Senior Architect to Principal, Chief or Head of Architecture — the technical bar is the easy part. We work on influence, narrative and judgement.
Engineering leaders
For tech leads and managers who want to think more architecturally and lead through ambiguity rather than firefighting.
Teams in transition
Group sessions for in-house architecture or platform teams going through reorgs, cloud migrations or AI adoption.
How I work
How I work
A few things I've come to believe after two decades in the room.
Influence without authority
Real architecture impact comes from alignment, not control. The best decisions are ones the team owns, not ones I forced through.
Trust before mandate
I focus on building trust so people choose to work with me, not because they are forced to. It's a slower start and a much better finish.
Relationships make better decisions
Strong relationships lead to better decisions and better outcomes. Every difficult call is easier when there's history and respect underneath it.
Mistakes are the curriculum
I have made mistakes throughout my career and learnt more from them than from any success. That experience shapes how I approach decisions today.
Certifications
Credentials
◆
TOGAF Certified
EA Practitioner
◆
AWS Certified
Solutions Architect
◆
Microsoft Azure
Cloud Certified
◆
Google Cloud
Cloud Certified
In their words
What people say
Subbu has a rare ability to take a messy program and turn it into something the leadership team can actually agree on. He cuts through the noise without ever being dismissive.
Head of TechnologyTier-1 Australian Bank
The most pragmatic architect I've worked with. He brings the rigour of TOGAF without ever waving the framework around. Outcomes first, every time.
CTOGlobal Retail & Logistics
His coaching changed how I show up as a tech leader. The stories stick — months later I still catch myself thinking, "what would Subbu ask here?"
Principal ArchitectFinancial Services, Melbourne
Insights
Insights
Practical lessons from architecture, AI, and real-world experience.
AI in the enterprise is not a technology problem
What leaders often miss when adopting AI.
Read the article →What I learnt from failed transformations
Lessons that matter more than success stories.
Coming soon
Thinking like an architect: real-world principles
How to approach complex decisions with clarity.
Coming soon
Who this is for
Who this is for
Executives
Leaders navigating digital and AI transformation who need clarity in the noise.
Enterprise Architects
Architects working in complex environments where the politics matter as much as the patterns.
Teams
Groups looking to improve architecture thinking and decision-making across the board.
Contact
Let's talk
Conference hosts, leaders and teams — if you're working on something where architecture thinking or lessons from real-world delivery would help, drop me a note. I read every message.