The scope on this document is restricted to ATIS-0200003@ CDN Interconnection Use Case Specification and High Level Requirement@ and ATIS-0200004@ CDN Interconnection Use Cases and Requirements for Multicastbased Content Distribution. Security-related matters are generally not in scope and may be addressed in additional documents or future revisions of this document. Purpose The purpose of this document is to describe the similarities and differences between the use of Content Delivery Networks (CDNs) in the ATIS IPTV Interoperability Forum (IIF) and Cloud Services Forum (CSF) standards. This output serves as a baseline to determine future work in specifying IPTV service delivery using cloud infrastructure.