# Step Types

The step `type` field selects how Atmos executes or renders a step. Step types expose the building blocks that power the Atmos CLI itself — command execution, interactive prompts, and rich terminal UI — so you can assemble [lifecycle hooks](/stacks/hooks#kind-step-run-a-step-type), [custom commands](/cli/configuration/commands) and [workflows](/workflows) from the same primitives Atmos uses internally. Step types are values of `steps[].type`; they are not sibling YAML sections.

```yaml
steps:
  - name: prompt
    type: input
    prompt: Enter deployment message
```

Use type-specific fields on the same step object:

```yaml
steps:
  - name: environments
    type: table
    title: Available Environments
    columns:
      - name
      - region
    data:
      - name: dev
        region: us-east-1
```