Implementing Immutable Backup with Restic When to Use - Establishing ransomware-resistant backup infrastructure with cryptographic integrity verification - Implementing 3-2-1-1-0 backup strategy where the extra 1 is an immutable copy - Automating backup verification workflows that test restore capability on a schedule - Protecting backup repositories from deletion or modification by compromised admin accounts - Meeting compliance requirements for data retention with tamper-proof storage Do not use as the sole backup solution without also maintaining offline/air-gapped copies. Object lock prot…