End-to-end encryption (E2EE) means data is encrypted such that intermediaries � including servers that store or relay ciphertext � cannot read plaintext. Only endpoints with keys decrypt.
Overlap with zero-knowledge
Password-manager �zero-knowledge� claims are a form of client-side / E2EE vault design: encrypt before sync. Always verify whether metadata or recovery escrow creates exceptions.
In AzAd Vault
Items are encrypted on device; optional Drive sync stores ciphertext you control. AzAd Solutions does not hold plaintext vault passwords. See zero-knowledge and security.
Transport TLS is not enough
HTTPS protects data in transit to a server that might still read plaintext at rest. E2EE / client-side vault encryption means the server’s disk holds ciphertext. You still want TLS for APIs and Drive access — layers compose. AzAd Vault relies on on-device encryption plus normal secure transport to Google APIs when sync is enabled.
Messaging apps vs password vaults
E2EE chat protects message bodies between participants. E2EE-style vaults protect secrets at rest and in sync for a single user (or carefully designed share model). AzAd Vault does not offer multi-vault item sharing; seats are entitlements. Do not assume chat-app mental models map 1:1 onto password managers.
See zero-knowledge and the deeper article.
Practical takeaway
Ask whether plaintext ever rests on vendor disks. For AzAd Vault items, encryption happens first on device. Account emails and Premium flags are separate planes. Clarity beats slogans when you compare products.
Related reading on azadvault.com includes the security page, blog guides, and companion glossary entries for Argon2id, AES-256-GCM, and zero-knowledge. AzAd Solutions ships AzAd Vault for Android, Windows, and Chrome with a concrete Free tier (500 items, 20 labels, 10 TOTP) and Play-billed Premium.