CEO's Daughter built a commission calculator with a rounding bug

“SharePoint has version history.”— Marco, CEO's Daughter

Reason:

Officially because the existing report is a PDF of a screenshot of Invoices_Q3_final_FINAL.xlsm. With dark mode and no error handling.

Built by:

Marco, an analyst

Build time:

12 minutes

Built with:

plain HTML and 1,900 lines of jQuery

Database:

a vector database containing invoices for reasons

Authentication:

the encryption key is in the source code

Deployment:

running in a region 8 time zones away from its users

Responsible:

Olivier and Sarah, who each think the other owns it

Documentation:

a file called README-NEW-FINAL.md

Security situation:

the privacy policy refers to a different application

Future disaster:

It will stop working the day the free tier ends.

Age: 45 days · originally expected to last 14 days · 2 owners so far · last meaningful change 45 days ago

Rated common mostly because: 2 accidental connections, alive 3x longer than intended, 6% chance of becoming business critical.