Constraint programming is a powerful tool for modeling and solving complex optimization problems. It is widely used to support industrial decision-making, as well as being used as a component in various intelligent systems. Constraint programming has its origins in constraint satisfaction and logic programming from the field of artificial intelligence, and mathematical programming from the field of operations research. In this talk I will: identify some of the challenges facing the field; present some exciting applications of constraint programming; and give a view of where opportunities lie for the future from the perspectives of both science and application.