What is MPLS?
Multiprotocol Label Switching (MPLS) is a type of data-carrying technique for high-performance telecommunications networks. MPLS directs data from one network node to the next based on short path labels rather than long network addresses, avoiding complex lookups in a routing table. The labels identify virtual links (paths) between distant nodes rather than endpoints. MPLS can encapsulate packets of various network protocols, hence its name "multiprotocol". MPLS supports a range of access technologies, including Midband Ethernet, EFM, Fibre, ADSL & NBN.
Essentially allowing your ISP like Emerge Internet to take the complex networking & VPN's OUT of your network and manage it for you!