These are two different answers to the same question: where should
your controlled unclassified information (CUI) live so that you can meet
CMMC requirements? A GCC High migration moves your whole working
environment into Microsoft’s government cloud, built for the compliance
needs of the defense industrial base. An enclave takes the opposite
approach: instead of moving everything, it walls CUI into one bounded,
hardened environment and leaves the rest of your business where it is.
For a small contractor whose defense work is a fraction of the business,
the enclave path usually means less disruption and less to secure. For a
company that is defense work through and through, a full
government-cloud environment can be the more honest fit. Here is how to
tell which one you are.
What is GCC High, in plain
terms?
GCC High (Government Community Cloud High) is Microsoft’s cloud
environment built for U.S. government workloads and the contractors that
serve them, with the data handling and personnel requirements that
defense-related data demands. Moving to it means your productivity
environment, email, files, collaboration, lives in that government cloud
rather than the commercial cloud most businesses use.
The practical consequence of a full migration: your whole company now
works inside the government environment, whether or not a given employee
ever touches CUI.
What is an enclave, in plain
terms?
An enclave is a separate, tightly controlled environment where all of
your CUI lives, walled off from the rest of your systems. CUI work
happens inside the boundary; everything else in the company keeps
running where it always has. We cover the concept fully in our enclave
explainer, but the
one-line version is: instead of securing everything you own, you secure
one well-built room and keep the sensitive work inside it.
The two paths are not enemies, and they are not mutually exclusive.
An enclave itself can be built on government-cloud infrastructure. The
real decision is not which technology brand to pick. It is whether your
CMMC boundary should be your whole company or a defined part of it.
What
does the whole-environment path cost you in practice?
Not just money: change. A full migration means moving every mailbox,
every file store, and every workflow, and retraining every employee into
the new environment, including the ones who will never see a piece of
CUI. Some integrations and familiar tools behave differently in a
government cloud, because its restrictions exist on purpose. None of
that is a reason not to do it. It is the honest price of putting your
entire company inside the compliance boundary.
For a contractor whose business is overwhelmingly defense work, that
price can be worth paying once rather than managing a boundary
forever.
When does the enclave path
win?
When most of your business does not touch CUI. If defense contracts
are one line of business among several, or CUI passes through a handful
of people and projects, an enclave keeps the other ninety percent of
your company out of scope and out of the disruption. Your sales team’s
laptops, your accounting system, and your everyday email stay exactly as
they are. The people doing CUI work step into the enclave to do it.
Scope is also what an assessor examines. A clean, bounded enclave
gives the assessment a defined environment to look at, instead of your
entire network.
How should a
small contractor actually decide?
Start with one number: roughly what fraction of your people and
projects touch CUI. If the answer is closer to ten percent than ninety,
the enclave path deserves the first look. If the answer is “basically
everyone,” a whole-environment approach deserves it instead. Then
pressure-test with two more questions: how disruptive would a full
migration be to the majority of your staff, and how quickly do you need
to be assessment-ready? A pre-built, hosted enclave is typically the
faster of the two paths to stand up, which matters while assessment
capacity is scarce.
This is exactly the scoping conversation to have before you commit
budget to either path. We are a compliance consulting partner for
defense contractors through the whole CMMC journey, and scope is always
the first thing we map. Simpatico Systems is a Registered Provider
Organization (RPO) with the CMMC accreditation body, so that guidance
comes from inside the ecosystem, not beside it.
What should you do next?
Do not start with a product decision. Start with a boundary decision:
whole company, or defined part? Schedule
a strategy session and we will map where CUI actually lives in your
business before anything gets bought.
If you had to say right now what fraction of your company touches
CUI, could you? That number is the whole decision.