The main advantages are that it has an interface with several CRM systems (Salesforce, Marketo) or other platforms like HubSpot. It also integrates well with marketing automation tools such as MailChimp. I dislike how much time it takes to set up integrations for new applications. Also, sometimes there's no way to track down information about why certain things aren't working correctly.
If you're looking into using one tool for multiple functions within your organization, then this could be aβ¦