Which layer does a finished product used by employees sit in?
Why D is the answer
Applications
End users work at the applications layer.
In detail
- A finished product used by staff is an application.
- Applications are where users work.
Use case
An illustrative scenario, not a real incident.
Staff use a finished assistant, and they never see the layers below it.
See it in different ways
flowchart TD A["Applications"] --> B["Agents"] B --> C["Platforms"] C --> D["Models"] D --> E["Infrastructure"]
flowchart TD
Q{"Who are you?"}
Q -->|"An end user"| A0["Applications"]
Q -->|"A developer"| A1["Platforms"]
Q -->|"A chip designer"| A2["Infrastructure"]Key point: End users work at the applications layer.
Why the other options are wrong
- A. Models
- Models sit lower down.
- B. Infrastructure
- Infrastructure is the base.
- C. Data centers
- Data centers are infrastructure.

