This layer is responsible for a management of content distribution, content ingestion, reporting, logging, request routing function.
Every CDN have some capabilities for content delivery methods, content adaptation and content security. All these information are very important for content transfer from a source to the consumer.
It is very important to map, which area can be served from which distribution node or network. In IP network this is done by a routing table, where every item – subnet is described by a network address and network mask. In CDN networks the address and size is defined in one parameter called a footprint. The footprint can be potentially any information about coverage like geographical area [43], Internet provider [44], etc. There exists a footprint table which contains list of all footprints with their distribution nodes.