What a zero-knowledge replacement for the confidential parts of a productivity suite covers, what it deliberately does not, and how to plan the split.
Three private surfaces. Same zero-knowledge architecture.
Confidentiality-first (move): client and matter files, contracts and deal material, personal or health data, source code and unreleased product, security and HR discussions, and the conversations and mail that carry all of it.
If any of those is missing, usage leaks back to the suite and the security benefit evaporates.
Three private surfaces. Same zero-knowledge architecture.