Why is it recommended to separate Display Network campaigns from Search Network campaigns?
- Separate campaigns allow for more accurate location targeting
- Different campaigns settings may be more effective on different networks
- Lower clickthrough rates (CTRs) on the Google Display Network can negatively affect Quality Score
- Higher bids required to be successful on the Google Display Network
Explanation: Each bid strategy is suited for different kinds of campaigns and advertising goals. For the purposes of bidding, you’ll want to consider four basic types of goals, along with your current campaign settings.
Read more here: https://support.google.com/adwords/answer/2472725