PIM Source-Specific Multicast is the correct multicast protocol when receivers can subscribe to traffic from known sources and the design must avoid rendezvous points. SSM uses the (S,G) model, where receivers explicitly join a multicast group from a specific source. Because the source is known at join time, the network does not need a shared tree or RP discovery process. This makes SSM attractive for broadcast-style streaming applications, such as video channels, where each stream source is known and receivers subscribe to specific channels. PIM Sparse Mode and Any-Source Multicast use an RP to allow receivers to discover active sources, so they do not meet the requirement of no rendezvous point. BIDIR-PIM also relies on an RP-rooted shared tree and is optimized for many-to-many applications rather than source-specific broadcast channels. For a large cable TV provider streaming multiple video channels from defined sources, SSM simplifies the multicast control plane, eliminates RP dependency, and scales efficiently by creating only the source-specific state required by active receivers.