What it is: A feature that prevents objects from being deleted or overwritten for a fixed retention period (WORM-style protection).

What it’s for:

• Meet compliance requirements (financial, legal retention).
• Protect critical data from accidental or malicious deletion.

Key ideas:

• Works at the object version level (requires versioning).
• Uses retention modes and retention periods.
• Retention is typically expressed via a Retain Until Date for a specific object version.

Hard words (English + IPA + Vietnamese meaning):

• *retention* /rɪˈtenʃn/: thời gian lưu giữ
• *compliance* /kəmˈplaɪəns/: tuân thủ
• *malicious* /məˈlɪʃəs/: độc hại/cố ý xấu
• *overwrite* /ˌoʊvərˈraɪt/: ghi đè

Child pages:

• Retention (mode, period, Retain Until Date)
• Bucket Default Retention Settings