The obvious focus is deep learning, but those models need data, trained and deployed. There is a lot of work on those edges that require some AI knowledge. Also

The obvious focus is deep learning, but those models need data, trained and deployed. There is a lot of work on those edges that require some AI knowledge. Also don't forget there are lots of AI techniques that are just as important now. So focus on an area that interests you, learn some of those AI methods and go! Every developer in the future will have to understand some of these methods at a basic level.