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All Fractional CTO Services in London
Advisory Playbook · London

Fractional CTO to Cut cloud, vendor & AI infrastructure costs in London

Your AWS, GCP, or LLM bill is eating your margin.

Infrastructure and AI API spend are scaling faster than ARR. Capital is leaking into over-provisioned clusters, unindexed database queries, and sprawling vendor renewals.

Principal CTO Execution Blueprint

We execute a 14-day FinOps and architectural audit—right-sizing compute, tuning queries, caching LLM pipelines, and cutting monthly cloud spend by 25%–50% with zero downtime.

Book a 30-Min CTO CallRequest 14-Day Diagnostic

Protecting Gross Margins for London Startups & Established Businesses

Across London, software teams and growing SMBs frequently watch AWS, GCP, Azure, Datadog, and OpenAI/Anthropic bills grow 2x faster than revenue. Unindexed multi-join SQL queries, oversized Kubernetes/RDS clusters, chatty microservices, and uncached frontier-model prompts silently erode runway and EBITDA.

Our 14-Day Cloud & AI FinOps Execution Protocol

  • Compute, Database & Egress Right-Sizing: We profile slow queries, eliminate N+1 bottlenecks, right-size RDS/compute tiers, and structure savings plans without risky lock-in.
  • LLM & RAG Inference Unit Economics: We implement semantic caching, prompt compression, and tiered model routing so 80% of routine tasks run at 10% of frontier token cost.
  • SaaS & Observability License Rationalization: We strip redundant monitoring ingestion, idle seats, and overlapping vendor contracts.
Representative Execution Pattern

London Growth-Stage SaaS & Data Platform

Challenge:Cloud and AI API infrastructure spend crossed 38% of ARR due to unoptimized PostgreSQL workloads, NAT gateway egress, and uncached LLM document pipelines.
CTO Intervention:Executed a 14-day FinOps diagnostic followed by 30 days of query indexing, read-replica tuning, Redis/semantic caching, and tiered model routing.
  • 41% net reduction in monthly AWS + LLM API spend within 45 days
  • Zero customer downtime and 3.1x faster P95 dashboard load times
  • Software gross margin lifted back above institutional 78% target

Frequently Asked Questions

Will cutting cloud costs hurt application speed or reliability?
Quite the opposite: most cloud overspend comes from brute-forcing inefficient database queries and uncached API calls with larger servers. Fixing the underlying architecture lowers bills and speeds up response times simultaneously.
Do you take a percentage of cloud savings or vendor commissions?
Never. We charge a transparent fixed audit or monthly Fractional CTO retainer with zero vendor kickbacks—100% of recurring infrastructure savings stay on your P&L.

Discuss Your London Roadmap With a Principal CTO

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Technical Diagnostic & Strategy Intake

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Interactive Fractional CTO Copilot

Plain-English Plan

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Live CTO Prescription · United States

Pass Investor Tech Checks & Enterprise Security Reviews

Production AI / LLMVC Due Diligence
$4,800 – $9,500 / mo (0% equity)Fractional CTO — Investor & Security Lead
Investor Ready14–21 Days
IP Ownership100% Verified
Equity Taken0%

Likely Architectural Root Cause: Missing system documentation, unchecked security settings, and unanswered compliance forms can stall funding rounds or big customer contracts.

First 14-Day Principal CTO Execution Plan
  • 01Create a clean, investor-ready tech folder (system diagrams, costs, and 12-month roadmap)
  • 02Lock down security, data backups, IP ownership, and SOC 2 / ISO 27001 / GDPR basics
  • 03Join your live investor and enterprise buyer calls directly as your Fractional CTO
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Agent-Ready & Independent AI Verification (GEO · AEO · JSON API)

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Cloud, AWS & AI Cost Optimization CTO in London