Sandbox
A non-production Power Platform or Dynamics 365 environment for development, testing, training, and demos — isolated from production data.
A sandbox environment in the Power Platform and Dynamics 365 is a non-production environment intended for development, testing, training, demos, and risk-free experimentation. Sandboxes are isolated from production — separate database, separate users where appropriate, separate integrations. They can be copied from production (most common pattern, for testing with realistic data) or reset to clean state. Sandboxes typically have lower infrastructure priority than production — they may pause, throttle, or update sooner. Most Dynamics 365 SKUs include some number of sandboxes; additional sandboxes are paid add-ons. The healthy environment topology has at least one dev, one UAT, and one training sandbox per major Dynamics 365 deployment, alongside one or more production environments.