What is the difference between CDD, EDD and SDD?

TierWhen appliedRequired steps
SDD — SimplifiedDemonstrably low-risk customers / productsReduced verification depth; ongoing monitoring still required
CDD — StandardDefault for most customersIdentity + verification + beneficial ownership + purpose + ongoing monitoring
EDD — EnhancedHigher-risk customers, PEPs, high-risk jurisdictions, complex / unusual transactions, correspondent bankingStandard CDD plus additional information on source of funds / wealth, senior management approval, more intensive ongoing monitoring

The risk-based approach (FATF Rec. 1) determines which tier applies.