Environments
DiligenceID has two logical environments per tenant: Sandbox and Production.
They are not two deployments. They are two isolated environments within the same platform, distinguished by
which key you present. A did_test. key reaches Sandbox; a did_live. key reaches Production.
The full explanation, including what is isolated and what a cross-environment request returns, is in concepts/environments.
Getting a Sandbox key: get-started/sandbox.