Multicast content distribution service
Multicast is a network technology that helps to reduce the number of copies of the same content moving through the network to reach several destination computers, by making copies of the content in the communications equipment closest to the information's end recipients. This represents a major saving of resources when information is distributed to a large number of users.
RedIRIS has been one of the pioneering networks in working with this technology and offering this service. The service has been offered since 2000, for example with the Òpera Oberta Project.