I like that it's easy to use, fast & accurate at predicting what will perform best for my clients' campaigns (I'm an agency). It also has some great integrations with other tools we're using such as Google Tag Manager which makes them even better! The UI could be made more intuitive - not everyone who uses this software knows how things work or where they should go next in order get their desired results from our advertising efforts/campaigns so having something easier would help there too :)β¦