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Software Cost Planning6 min read

What increases the cost of building internal tools the most?

The cost amplifiers that quietly turn a $40K project into a $140K project.

Most cost overruns aren't caused by bad development. They're caused by decisions made — or not made — before development started.

The biggest cost amplifiers

  • Scope discovered mid-build instead of mid-spec.
  • Integrations with poorly documented or rate-limited APIs.
  • Permission models that change after the schema is set.
  • Data migration from messy legacy sources.
  • Compliance requirements added late.
  • Stakeholder disagreement that surfaces during UAT.
  • Custom infrastructure when SaaS would suffice.

How to defuse them

Surface every one of these during architecture planning — before engineering starts. The cost of finding a problem in a spec is ~1x. In a prototype, ~5x. In production, 50x+. That ratio is why product architecture pays for itself.

De-risk before you build

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