I like that you can have so much control over your campaigns without having too many different tabs open at once! The interface isn't always intuitive - it took me quite some time before figuring out how everything worked together.
But since then my workflow has been very smooth because of this!! If there's one thing we've learned about running an e-commerce site for our clients' brands (which are big players), its being able to deliver results quickly when needed most--and not just sit around waiting until everyone gets back online again after maintenance hours/etc., etc.--or worse yet, doing nothing during those times due to budget constraints. This system allows us do be proactive AND reactive simultaneously by using ABA which helps keep things moving along smoothly even under adverse circumstances such as downtime /maintenance periods. It also gives users complete freedom from needing any additional IT help.