Traditionally, network equipment has been seen as a closed box with little opportunity to invent. With the recent support of new programming languages such as P4, compiler and runtime support, the next generation of network equipment will be programmable, enabling new use cases. The course is divided into three modules. In the first module, we will introduce the concept of programmable data planes, including P4. In the second part, we will look into how we can use programmable data planes for data-center loadbalancing. Finally, part three covers techniques that enable network monitoring, in-network caching and facilitate simple computing operations with programmable data planes.