The search term match sources.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v23/enums/search_term_match_source.proto)

| Enums ||
|---|---|
| ## `ADVERTISER_PROVIDED_KEYWORD` | The match is from a user-provided keyword. |
| ## `AI_MAX_BROAD_MATCH` | The match is from the broad match expansion portion of AI Max. |
| ## `AI_MAX_KEYWORDLESS` | The match is from the keywordless expansion portion of AI Max. |
| ## `DYNAMIC_SEARCH_ADS` | The match is from a Dynamic Search Ad. |
| ## `PERFORMANCE_MAX` | The match is from the search term matching functionality in PMax. |
| ## `UNKNOWN` | Used for return value only. Represents value unknown in this version. |
| ## `UNSPECIFIED` | Not specified. |
| ## `VERTICAL_ADS_DATA_FEED` | The match is from a vertical ads data feed (e.g. Travel Ads entity targeting). |