> ## Documentation Index
> Fetch the complete documentation index at: https://docs.skrmir.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Environment Model: Dev/Test/Preview/Prod

> AiOS default environment model, permission boundaries, approval policy, and runtime differences.

# Environment Model: Dev/Test/Preview/Prod

## Audience

This page is for maintainers and operators who need to design permissions, approvals, release flows, and environment isolation.

## Goal and Scope

This page explains the semantic differences between the default four environments and why production guardrails differ from the others.

## Core Concepts

### Dev

* optimized for day-to-day development
* prioritizes fast iteration
* some mutations may execute directly under RBAC

### Test

* optimized for integration and automation validation
* still prioritizes feedback speed
* usually stricter than Dev, but not necessarily prod-style approval

### Preview

* optimized for pre-release validation
* closer to production configuration
* more restrictive than Dev/Test by default

### Prod

* handles formal business traffic
* high-risk mutations default to `require_approval`
* approval, audit, and rollback chains must remain complete

## Standard Workflow

### Non-prod

`AuthN -> AuthZ(allow/deny) -> Execute -> Audit`

### High-risk prod mutations

`AuthN -> AuthZ(require_approval) -> Approval -> ValidateBinding -> Execute -> Audit`

## Planned CLI Examples (Not Yet Implemented)

The repository does not currently ship these environment-targeting CLI commands. They remain examples of how guardrails differ across environments.

```bash theme={null}
aios app up --env dev
aios app up --env prod
```

## Web UI Path

* environment selector
* application detail environment context
* production approval tickets in the approval center

## Pitfalls / Risk Notes

* Preview is not just “simplified prod”; it is its own policy layer.
* production rollback should still follow the same guardrail chain by default.

## Related Pages

* [Light Mode vs Full Mode](/en/platform/cluster/light-vs-full-mode)
* [Production Step-Up and Approval](/en/agent/production-approval)