Explanation:
Allow values during import # Define environment variables in the solution; Exclude values from the agent definition # Define environment variables in the solution; Dedicated instance per environment # Publish a distinct agent version in each environment.
Comprehensive and Detailed Explanation From Microsoft AB-620 Study Guide: Environment variables separate deployment-specific values from the solution components that consume them. Their definitions travel with the solution, while current values can be supplied during import or deployment for Dev, Test, and Prod. This satisfies both the need to set values at import and the need to keep those values out of the agent ' s authored definition. Hard-coding would force edits for every environment and create configuration drift.
Channel-specific settings address channel behavior, not general external references such as endpoints, IDs, or connection details. Each Power Platform environment contains its own imported agent component and runtime configuration, so a distinct published agent instance is maintained per environment after deployment.
Pipelines can prompt for or preconfigure environment-variable values and connection references as the solution advances through stages. Administrators should avoid placing secrets in ordinary text variables; secret environment variables can reference Azure Key Vault when needed. A release checklist should verify all current values and connections before publishing the target instance, because missing configuration can leave flows or tools unusable even when solution import succeeds. Study Guide alignment: Test and manage agents > Implement application lifecycle management for agents in Copilot Studio > Create and use environment variables.