For founders and CEOs, government agencies, regulated industries and infrastructure operators who need senior technology leadership without a permanent CTO in place.
On-demand technology governance that leaves a working roadmap in place and a team that owns it. Every engagement builds internal capability and ends with a defined handover.
Many organisations have capable technical and operational teams but lack the enterprise-level technology governance to unify decision-making, guide architecture, and ensure ICT investment translates into measurable outcomes. A full-time CTO may not be justified yet.
I do not believe in creating permanent consulting dependencies. I believe in independent, objective governance that builds internal capability, then gets out of the way.
Terry Sweetser, IEISI FounderCore systems and infrastructure have grown organically over years, creating silos increasingly misaligned with strategic priorities and whole-of-government directions.
Strong teams delivering day-to-day, but no one connecting technology choices to long-term business and regulatory outcomes. Architecture decisions happen in isolation.
Your previous technology leader has moved on. You need experienced governance now, not in six months when a permanent hire is onboarded and oriented.
You know the environment needs uplift (investment planning, architecture governance, platform consolidation) but lack a coherent strategy to sequence and execute.
Most organisations weighing CTOaaS are comparing it against one of four paths. Each is a reasonable choice in the right circumstances.
Strong for a defined, time-boxed piece of work backed by heavy resourcing, such as a major systems integration. Less suited to ongoing governance: engagements are typically scoped to produce a report or a project plan, then conclude, leaving execution and internal capability building to the client.
Fast to engage and deeply familiar with your existing platform. The trade-off is independence: vendor architects are naturally oriented toward extending that vendor's footprint, which can work against a genuinely vendor-neutral evaluation of your options.
The right answer once the organisation's technology function has grown to the point of needing full-time executive leadership. Before that point, it is a significant fixed cost and a lengthy hire and onboarding process to solve a governance gap that may not require a full-time role yet.
Genuinely the right call where existing teams already hold the governance mandate and are executing well. Where the gap is real, deferring it usually means architecture and investment decisions keep happening without a coordinating voice, and the cost of correcting course later grows.
CTOaaS (Fractional CTO) provides on-demand access to senior technology governance without the cost and commitment of a full-time executive hire. It sits between ad-hoc consulting and a permanent appointment: ongoing, structured governance that integrates with your existing team, building capability, not dependency.
Enterprise architecture review, standards development, and ongoing governance to ensure technology decisions are coherent, defensible, and aligned with organisational strategy.
Prioritisation frameworks for technology spend. Connecting ICT investment to measurable business and regulatory outcomes with clear sequencing and dependency mapping.
Practical, phased plans for migrating from legacy environments to contemporary platforms. Vendor evaluation, technology selection, and transition architecture.
Ongoing CTO-level participation in governance committees, executive briefings, and strategic planning. A trusted steward who understands your environment and its constraints.
Vendor-neutral evaluation of proposals, platform choices, and procurement options. Independent of vendors. Advice based solely on your organisation's interests and the evidence.
Mentoring your technical leaders. Building the skills, frameworks, and confidence your team needs to sustain momentum after the engagement concludes.
Fractional CTO days, monthly coaching, or a fixed-scope Sprint. Start with whichever fits: none depends on another.
A senior CTO, one to three days a week, working inside your team on an ongoing basis. Senior leadership without a full-time executive hire, handing over to your team as it grows.
For founders and technical leaders. Moving from senior engineer to CTO means designing human systems with the same rigour as technical ones. Founders and CEOs get a senior technology sounding board. Tech leads and IT managers build CTO-level judgement.
Intensive assessment and framework development. Audit the current environment, establish governance structures, and map the modernisation path forward.
The thinking behind the coaching: From Network Engineering to CTO sets out the Management 3Rs and decision architecture. Marc van Neerven’s Taking the last hurdle to become a CTO argues the final step is self-management: the discipline to get off the tools and do the strategic work, because while a CTO holds delivery duties, “operation always wins”.
Led by Terry Sweetser (BEng, MBA, MIEAust), IEISI brings three decades of hands-on experience building, operating, and governing mission-critical internet infrastructure across the Asia-Pacific, including M&A technical due diligence work in the millions.
The CTOaaS engagement typically reports to your Chief Information Officer, Chief Digital Officer, or equivalent. It complements your internal governance rather than replacing it, providing strategic depth and contemporary technology perspective your existing team can draw on.
I work within Australian Government procurement frameworks and understand the compliance requirements of government and regulated industry environments. Specific clearance requirements can be discussed during scoping.
Brisbane, Queensland, available nationally and across the Asia-Pacific. Engagements combine on-site presence with remote advisory, scaled to what the work requires.
Book an introductory call to discuss your technology environment, strategic priorities, and whether CTOaaS is the right model. A straight conversation about your situation. You'll leave with a clear view of whether it fits and what a first engagement would look like.