The prompt is the easy part.

Software built on vibes and rickety architecture holds up in front of the CEO. It collapses on second contact. The second user finds all the clunk.

The prompt-to-production fantasy has a short half-life. Screenshots ship. Databases don't. What looks like a working product is often a working front held up in the back by duct tape.

Engineering is what makes the tenth user work as well as the first.

Unbounded token spend is a line item no one budgeted. Senior engineers cap it: model selection, prompt caching, response length, streaming where it matters, per-tenant limits so one operator can't burn the month's budget. Or worse, a malicious bot runs up a $50,000 token bill overnight. It happens.

Without those controls, your AI bills will compound until a CFO asks a question no one can answer.

The AI bill that grows faster than revenue is the fastest way to lose a good product.

Passwords stored where anyone can read them. Security keys hiding in plain sight. Login forms that let anyone walk in without a password. No limits to stop a bot from hammering the system. Sessions that never end. One lost phone becomes total access.

One weak door, and every customer record is exposed.

A senior engineer catches these on day one.

The good audit doesn't care who wrote the code. It only cares what the code does.