trusted boundary

A funny definition, invented by a set of elderly IT folks, as a set of IT systems that can interact without security, and a good excuse to get architecture approved bypassing security concerns.

The definition may become so wobbly that the full landscape is a trusted boundary, the VPN is a trusted boundary, System A to System B connection is a trusted boundary, a generic combination of system A B and C is a trusted boundary.

Therefore the polymorphism of this concept has been used and misused to get architecture approvals that bypass any poor's man common sense.

we shall stop using this trusted boundary concept because it became so vague that it was impossible to define and to use