When to build custom
SaaS vs purpose-built platforms
A practical filter for leaders choosing between SaaS, configuration, and a purpose-built platform.
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In this article
- Start with the workflow, not the catalogue
- Buy the commodity, build the core
- Plan for ownership
Published2 December 2025
Start with the workflow, not the catalogue
If your competitive edge lives in how work moves across sites, roles, and exceptions, configuring generic SaaS often costs more than it saves — in process contortion and shadow IT.
Buy the commodity, build the core
Email, chat, and accounting are rarely your differentiator. The operational system that encodes your domain — attendance rules, trip logic, compliance packs — usually is. Invest custom effort there.
Plan for ownership
Custom only works if someone can evolve it. Prefer clear architecture, documentation, and a partner who stays past launch over a black-box build that freezes the day after go-live.
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