Different users might respond in different ways when presented with certain ad
form factors or location. In this use case, you can use a Remote Config
parameter like `ad_placement` with different locational values, and optimize
for ad clicks.

When optimizing for `ad_clicks`, you might want to configure at least one
additional metric for `user_engagement` to track user engagement levels to
ensure they stay high.

| **Personalization component** | **Potential and recommended values** |
|---|---|
| Remote Config parameter | `ad_placement` |
| Alternative values | `top-left, bottom, middle-panel, full-screen` |
| Objective | `ad_clicks` |
| Additional metrics | `user_engagement` |