I often hear people (and myself) say that something is "siloed off from" something else, meaning that is is isolated (or, in software, sandboxed) and allowed to work without affecting something else.
To silo is a transitive verb, the usage you are referring to is a probably a slang one:
Isolate (one system, process, department, etc.) from others:
- most companies have expensive IT systems they have developed over the years, but they are siloed
- why are so many companies still siloing their SEO and social media marketing?
(as adjective) siloed managers have been told to break down the walls between siloed applications
I'm surprised not to find more about this online -- it may be a bit too recent and/or esoteric to have found its way into the literature. This is related to the term "information silo", see Wikipedia HERE.
It can be seen as somewhat similar to "fork". Open source projects are sometimes "forked" into a new version which is related to the original and the ongoing one, but with differences introduced that may or may not make the two versions incompatible. If totally incompatible, then the fork may now be in its own "silo", and no longer compatible.
And is, hence, "siloed off".