# Overview
Simon connects to Google Ads to update [Google Ads Customer Match Re-marketing Lists](🔗) via Simon Stream Flows.
Use Cases
Keep your Google Ads Customer Lists in sync with your Simon campaigns for more robust and personalized ad targeting.
### Before You Begin
Review [Flows and Channel Actions: How They Work](🔗).
If you haven't already, [connect your Google Ads account to Simon.](🔗).
# Action Types
| Action | Function | Journeys 2 | One-time | Triggered | Stream | Recurring |
| [Add Contact to List](🔗) | **Add** contacts to a [Google Ads](🔗) Customer List for use in [Customer Match](🔗). | ✅ | ❌ | ❌ | ❌ | ❌ |
| [Remove Contact From List](🔗) | **Remove** contacts from a [Google Ads](🔗) Customer List for use in [Customer Match](🔗). | ✅ | ❌ | ❌ | ❌ | ❌ |
| [Sync Contact To Customer Match Audience](🔗) | Sync flow contacts with a [Google Ads](🔗) Customer List for use in [Customer Match](🔗), if they are existing Google users. | ❌ | ❌ | ❌ | ✅ | ❌ |
<!-- [Sync Multi-Key Contact To Custom Audience](https://docs.simondata.com/users/docs/sync-multi-key-contact-to-customer-match-audience) Sync flow contacts to multi-key Audiences. This allows you to pass additional data about your customers to increase match rates when syncing to [Google Ads](https://support.google.com/google-ads/?hl=en#topic=10286612). -->
