Machine Learning, a subset of Artificial Intelligence, concerns itself with creating models which, once provided input, can "learn" from this data and suggest courses of action or improvements without direct human involvement. Where conventional algorithms do not suffice, machine learning can provide a more plastic solution to solve problems in communications, medicine, logistics, and so much more! With a degree in Machine Learning from a German university, you will be able to secure important and respected (not to mention well-paid!) work for as long as you like - this field is booming, and from all indications this will continue over the coming years and decades.