> [!CAUTION]
> **Caution:** This documentation is for Google Ads API **v24** . The latest active version is [**v26**](https://developers.google.com/google-ads/api/reference/rpc/latest/AccessibleBiddingStrategy.TargetImpressionShare).

An automated bidding strategy that sets bids so that a certain percentage of search ads are shown at the top of the first page (or other targeted location).

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v24/resources/accessible_bidding_strategy.proto)

| Fields ||
|---|---|
| ## `cpc_bid_ceiling_micros` | `int64` Output only. The highest CPC bid the automated bidding system is permitted to specify. This is a required field entered by the advertiser that sets the ceiling and specified in local micros. |
| ## `location` | `TargetImpressionShareLocation` Output only. The targeted location on the search results page. |
| ## `location_fraction_micros` | `int64` The chosen fraction of ads to be shown in the targeted location in micros. For example, 1% equals 10,000. |