Build, Buy, or Replace
Decision frameworks for build vs buy, SaaS replacement, and migration planning.
The economics of building software have changed. AI-augmented development has compressed timelines and reduced cost, which means the build vs buy calculation looks different to even two years ago. These guides provide structured decision frameworks, TCO models, and migration playbooks for teams re-evaluating their software portfolio.
From assessing whether a SaaS tool should be replaced, to understanding the legal boundaries of clean-room reimplementation, to planning a 90-day migration, this collection gives you the evidence and structure to make confident decisions.
Power Apps, SaaS, or Custom Build? A Self-Assessment for Business Leaders
Answer 10 questions covering your IT capability, requirements, and preferences to get a tailored recommendation. Free, expert-backed results in three minutes.
What You Can (and Can't) Legally Copy When Replacing SaaS: A UK Guide for CTOs
UK copyright law protects expression, not functionality. Learn what CTOs can legally replicate when replacing SaaS with custom-built software, including clean-room implementation, TOS boundaries, and data portability rights.
The AI-Era SaaS Replacement Playbook: When, Why and How to Replace SaaS with Custom Software
AI-augmented development has collapsed the cost of custom software. A decision framework for UK CTOs evaluating whether to replace SaaS tools like HubSpot, BambooHR, and Workday with purpose-built systems.
SaaS to Custom Software Migration: A 90-Day Playbook
A phased migration plan for moving from SaaS to custom software. Covers discovery, data migration, parallel running, and cutover with week-by-week guidance.
When to Replace SaaS with Custom Software: A CTO's Decision Framework
A practical scorecard for CTOs evaluating whether to replace a SaaS tool with custom-built software. Six criteria, scoring guidance, and worked examples.
Build vs Buy: How AI-Augmented Development Changes the Equation
The traditional build-vs-buy framework assumed custom software was slow and expensive. AI-augmented delivery changes the cost, speed, and risk calculation. A practical decision guide for CTOs and product leaders.
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REST, GraphQL, gRPC, Azure API Management, and integration patterns.
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Legacy Modernisation
Recognising hidden costs, choosing a modernisation strategy, and planning migration from legacy systems.
Teams and Support
Choosing partners, managing handovers, and outsourcing application support.
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