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Builder Center ·Level 400·Aug 2026

How we built a formally verified fraud rules engine on AWS

The problem
A fraud rule that is wrong, or can be bypassed, costs money and creates regulatory exposure.
Why it matters
Z3 proves rules correct before deployment, Cedar enforces bypass-proof hard stops, and Drools handles velocity rules, plus an open rule format for 8 platforms.
Who should read it
Fraud platform architects
What you'll get
A provably correct rules architecture.
Financial Services Fraud & AMLAI governanceFormal methods How (deep dive)
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