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Buy, build, and the
space between

A practical test for deciding what deserves custom engineering and what should be configured and forgotten.

14 February 2026 6 min read MoinSystems ai — Engineering

A simple test

If a process is a genuine differentiator and competitors would need to change their operating model to copy it, it likely deserves custom engineering.

If the process is table stakes, buy the most boring option available and spend the attention elsewhere.

The space between

Most enterprise reality sits between the two: a purchased platform with a thin, well-designed layer of custom capability where the differentiation lives.

The failure mode is customising the platform itself rather than building alongside it.

Considering a system like this?

We run a short technical discovery before proposing anything. If a simpler answer exists, we will tell you.

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