A screen tells you about the day you screened. Monitoring tells you about the day status changed, which is the day that actually matters.
A customer clean at onboarding is not guaranteed to stay clean. Sanctions status, adverse media and company facts can all change afterwards, and a business relationship that runs for years needs that change to surface when it happens, not the next time somebody happens to run a check.
Entities go under watch individually or as a portfolio: register changes, sanctions and adverse media tracked on the company and on the people behind it, drawn from the same register network used for company data, more than 200 registers. One matching layer covers sanctions, politically exposed persons, adverse media, crime and law enforcement data, and insolvency, current and historic, direct and indirect. The alert fires when status moves rather than on a fixed schedule. Engineering focuses on reducing false positives rather than adding another list, because under monitoring the same false positive returns every time the entity is checked again.
Monitoring draws on the identity and company data already established during onboarding, which is what makes the matching better than a screening tool bolted on afterward with no context for the entity it is checking. The same watch applies wherever a business keeps a relationship with a person or a company after the point they were first verified, not only at onboarding.