Each campaign in your Google Ads account should have a single:
- maximum cost-per-click (max. CPC) bid
- landing page
- business goal
- ad group
With AdWords, you’ll organize your account into separate campaigns, with each campaign focusing on a single business goal, such as driving traffic to your website, or offering a particular product or service. If your business serves several geographic areas, you might want to create a separate campaign for each location.
Read more here: https://support.google.com/partners/answer/6172648