Insights

Notes from building business software.

What we learn designing, shipping, and running production systems for founders and operators.

8 July 2026 · 5 min read

Why spreadsheets stop scaling

Every business starts in a spreadsheet. Here are the five failure points that show up as your operation grows — and how to know when it's time to move on.

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Coming next

  • Choosing between custom software and SaaS
  • Lessons from building nine production systems
  • AI in business operations
  • Architecture decisions behind Carlsson Studio