UD ADVANTAGE
Portable source-to-derived lineage, explicit living/final state and local verification.
Migration guide
Fair migration comparison
BOTH
DMS, OCR, normalization and archive projects can preserve sources and structured metadata when designed well.
INCUMBENT CURRENTLY STRONGER
PDF/A acceptance, mature archive ecosystems, industrial OCR and repository-scale governance.
UD PLANNED
No claim of accepted archival-standard status or universal format fidelity.