Services
One practice, four ways in
Every Comtau service is led by a senior CTO or architect and runs on the same operating model. What differs is how much you hand over - ownership, a decision, an assessment, or an AI system.
Choose by situation
Where to start, and where it usually leads
Most engagements start narrow. These are the paths the service pages describe.
01Nobody senior owns technology decisions
Start here: Fractional CTOOften continues into: CTO as a Service, if delivery capacity is needed02One decision you are stuck on
Start here: CTO ConsultingOften continues into: Fractional CTO, when the decisions keep coming03A founder who needs judgement, not an executive
Start here: Startup Technical AdvisorOften continues into: Fractional CTO, when ownership is needed04Your CTO has left or a crisis needs a leader
Start here: Interim CTOOften continues into: A permanent hire, with a handover package05Delivery keeps slowing down
Start here: Architecture ReviewOften continues into: Technical debt remediation or architecture consulting06A deal is on a clock
Start here: Technical Due DiligenceOften continues into: The first 100 days after close07An AI MVP has to go to production
Start here: AI Production ReadinessOften continues into: Hardening, one verified unit at a time08You are designing an AI product
Start here: AI Architecture ConsultingOften continues into: Fractional CTO for AI Startups
Every service, in one line
Still choosing a model? Compare CTO models · Fractional CTO cost · Startup CTO by stage
CTO Leadership
- Fractional CTO
Part-time senior leadership that owns strategy, architecture, engineering and delivery.
- CTO as a Service
A complete CTO function as a service, with optional delivery capacity.
- Interim CTO
Full-time, hands-on leadership for a defined period, ending in a clean handover.
- Virtual CTO
Remote technology leadership for software and product companies - not IT support.
- Startup CTO
A founder’s guide to the right technical leadership for each stage.
- Hire a Fractional CTO
How to engage a senior technology executive directly, and how to evaluate one.
- Fractional CTO Cost
How pricing works, what drives cost, and pricing to deliverables.
Advisory
- CTO Consulting
Senior advice on one decision, answered with a written recommendation.
- Technology Strategy Consulting
An architecture-grounded roadmap that connects business goals to what gets built.
- Startup Technical Advisor
Light, recurring senior guidance for founders.
Architecture & Risk
- Software Architecture Consulting
Target architecture, decision records and a migration roadmap - from architects who implement.
- Software Architecture Review
An independent, fixed-scope review: scored findings, risk register, roadmap.
- Technical Debt
Debt measured across code, architecture and process, prioritised by business impact.
- Technical Due Diligence
An independent assessment of a target’s technology before you sign.
AI
- AI Architecture Consulting
Architecture for LLM and agentic products: models, retrieval, evaluation, cost.
- AI Production Readiness
An audit of an AI-built MVP, turned into a prioritised hardening plan.
- Fractional CTO for AI Startups
Hands-on fractional leadership for AI and LLM product startups.
Not sure which one fits?
Describe the situation. We’ll help you work out which kind of technical leadership you need.
Direct conversation with a senior CTO/architect. We’ll review your situation and determine the useful next step.