The continuous advances made in the field of internal blade cooling as of development, design, experimental techniques and computational methods, while opening new perspectives, also create the need for reviewing the state of the art. The Lecture Series will pivot on the modern strategies that designer and researchers are presently following in order to reduce the gap between simplified models and engine reality. The discussion will focus on the impact of the following factors: effects of wall conduction, effects of rotation, complexity of real cooling geometries, definition of appropriate heat transfer descriptors.