With the latest Sitecore 9 release, a completely new Marketing Automation tool is available for users to quickly plan and extend their automation activities with an intuitive drag-and-drop interface.
Also, a new fully-scalable engine architecture is now available so that you can make sure to process new activities as quickly as you need to.
I have put together a video series as well as a blog post on the new capabilities in Sitecore 9 and published it to the Sitecore Technical Marketing blog!
St-Cyr Thoughts 