The Agent Is 20% of the Work. The Platform Is the Other 80%.

May 17, 2026 · 4:56 AM UTC ·4 min read · 0 reactions · 0 comments · 37 views

#ai #platformengineering #devops #mlops #governance #Todd Linnertz #AI Dev 26 #payroll team #Acme Corp #Brussels

TL;DR · WeSearch summary

An enterprise AI agent deployed for payroll processing achieved 94% accuracy in testing but only 70% in production due to unanticipated real-world input variations. The team improved accuracy to 98% through shadow testing and infrastructure enhancements, not model changes. This highlights that successful AI deployment depends more on platform engineering than on the agent model itself.

Key facts

▪The payroll AI agent processed over 3,000 emails daily, performing six-step data extraction and classification.
▪Test accuracy was 94%, but production accuracy dropped to 70% due to unanticipated inputs like typos, screenshots, and conflicting instructions.
▪Shadow testing over four weeks, where AI outputs were reviewed alongside human work, increased effective accuracy to 98% without changing the agent's model.
▪The agent engine represented only 20% of the work, while platform infrastructure like evaluation pipelines and input governance made up the remaining 80%.
▪Without proper evaluation infrastructure, teams risk outsourcing their AI learning to vendors who control their testing and feedback loops.

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Original publisher	DEV.to (Top)
Canonical URL	https://dev.to/todd_linnertz_871a076f68e/the-agent-is-20-of-the-work-the-platform-is-the-other-80-4cf8
Publication time	Sun, 17 May 2026 04:56:38 +0000
Retrieval time	2026-05-17T05:33:58.675Z
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Indexing	May the item be indexed (stored, ranked, made findable)?	Allowed
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Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.

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Opening excerpt (first ~120 words) tap to expand

try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3861685) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } Todd Linnertz Posted on May 17 • Originally published at devopsdiary.blog The Agent Is 20% of the Work. The Platform Is the Other 80%. #ai #platformengineering #devops #mlops Governing AI in the Enterprise (2 Part Series) 1 AI Doesn't Fix Your Development Problems. It Accelerates Them. 2 The Agent Is 20% of the Work. The Platform Is the Other 80%. Originally published at devopsdiary.blog. Post F-AID1 in the "Governing AI in the Enterprise" series.

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