What is Time-based retention (WORM) policy? · Ultra Transcenders glossary

An immutability policy for blobs: for the configured retention period, data stays readable but cannot be changed or deleted.

In the Ultra Transcenders books

Each book explains Time-based retention (WORM) policy in context, with comparison tables and the common traps.

Immutable Blob storage
Write-once, read-many protection for blobs, provided through legal holds or time-based retention.