06 — Conclusion

What this
primitive enables

MASQUE Network Relay fills a gap that neither VPN nor application-level access control could close.

Key properties

01
App-transparent by design

02
Narrower blast radius than VPN

03
Hardware-gated, not credential-gated

04
A building block, not a complete solution

Limitations

LimitationImplication
Apple platforms only
Static relay IP required
QUIC / UDP must be open

See the Azure AVD case study — the PoC that validated this architecture, with four layers of tenant isolation built on top of the relay.