Short answer: A managed mock cloud is a hosted service for stubs; the Hub hosts the mock and the docs together from the spec. The first is a hosted mock; the second is a hosted contract, so the mock and the reference cannot be out of sync.

What a mock cloud provides

Hosted stubs, collaboration, and a free call allowance. It is the right tool when the mock is a standalone hosted service.

What the Hub provides

PropertyMock cloudHub
Hosted surfaceMockMock + docs
SourceStub codeSpec
SyncManualOn publish
Agent toolsSeparateFrom spec

Why the shared host matters

A mock and a reference hosted from the same contract are aligned by construction, so a reader and an agent see the same surface.

The decision rule

Use the mock cloud for a standalone hosted mock. Use the Hub when the mock and the reference should be hosted together.

This is part of the Powerduck vs WireMock comparison. Next, read the matching comparison.