Step 1: In the Connectors view, select the Marketo connection tile
Step 2: Select add a new Account
Step 3: Enter the Marketo connection information. See this article for more details on getting information from Marketo.
Step 4: Map the fields from D&B Lattice to Marketo
You may select any of your configured attribute groups to map to Marketo. The group you use must include email and email must be mapped to the corresponding Marketo email field. There is a 1000 field limit to the number you may map.
Step 5: Verify the Marketo Connector tile appears in D&B Lattice
You are now ready to launch campaigns to Marketo!