Why Search Keyword Targeting is Ending
If you're not particularly interested in this part, feel free to skip it.
However, knowing the background australia business email list of media updates will lead to a deeper understanding of the media and even predictions about the future, so I think it will be useful for managing advertising at a high level.

Consolidation into "Audience List Targeting"
Audience categories and search keywords are combined into audience lists
*Source: Yahoo! Ads Audience Targeting Renewal
First, the apparent reason, as announced in "Renewal of Audience Targeting for Display Advertising," is to consolidate multiple targeting methods that are scattered across various setting methods into "Audience List Targeting."
Targeting with OR conditions
The main reason why we do this is to allow different types of targeting to be set using OR conditions (a target will be created if either condition is met).
What this means is that until now, for example, if you set "interests" and "search keywords" targeting in one ad group, the AND condition was applied (only users who met both conditions would be targeted).
Going forward, all targeting will be "audience list targeting," so even if you set multiple lists in one ad group, you will be able to deliver ads under OR conditions.