Cosmos DB security: which control protects what

This sheet compares IP firewall rules, VNet service tags, Always Encrypted, Customer-managed keys.

CriterionIP firewall rulesVNet service tagsAlways EncryptedCustomer-managed keys
ProtectsWhich source IPs can reach the accountIsolates the account to a VNet via NSG rulesSpecific fields from privileged data-plane usersEncryption-at-rest key ownership

The verdict, the full comparison, 3 rules and 3 traps are part of DP-420 access. Unlock DP-420.