Marketo offers a Target Account Management (TAM) application.
When you use Marketo Web Personalization and Target Account Management (TAM):
TAM is the source for your Account Lists
Account Lists are managed (created, edited, and deleted) in TAM
Account Lists are synced to Web Personalization for use in Segmentation. Select them from the drop-down
In Web Personalization, you can create segments targeting accounts from the Account List you created in TAM, and personalize content for these accounts
If you’re already using ABWM:
You can create Account Lists in ABWM and in TAM
You can create, edit, and delete Account Lists in TAM and in ABWM
Account Lists (from both ABWM and TAM) are synced to Web Personalization for use in Segmentation
In Web Personalization, you can create segments targeting accounts from Account Lists created in both ABWM and TAM and personalize content for these accounts
You can upload CSV files on the Web Personalization Account List page