Why would you use Multiprotocol Label Switching (MPLS) as a connectivity option?

The requirement for multiple protocols is a compelling reason to use MPLS. The protocols moving across MPLS nodes are irrelevant to the technology. This is because layer 3 information is not examined to route packets. The use of MPLS can be configured to support multicast packets, but this is not a primary driver in selecting MPLS. The use of MPLS does not give you any higher bandwidth than you would have with any other technology. MPLS supports encryption, just as any other WAN technology supports encryption.