Why can a large payment processor spot fraud better than a single merchant can?

1. A fraud detection service uses artificial intelligence to analyse the payments crossing its network. 2. That network carries the traffic of many businesses at once, so the data set is very large. 3. Patterns of suspicious activity show up across many merchants before they are visible within any one of them. 4. A single company reviewing only its own transactions sees a small slice and misses the pattern. 5. So the advantage comes from the breadth of the data rather than from the effort spent per payment. 6. Manual review does not scale to that volume, which is why the work is done by artificial intelligence. _Source: OpenStax Introduction to Business (CC BY 4.0), Ch 15 "Understanding Money and Financial Institutions", section 15.6 Trends in Financial Institutions_