MPLS is an acronym for Multi-protocol label switching and it’s a technology used for connecting/networking multiple branch offices together with a private IP connection. Multiprotocol Label Switching is a type of protocol that is used to shape network traffic flows and to increase speed. As a standard today, networks are divided into numerous segments through switches. Each segment can have individual data communications, which results in load separation. This allows for multiple message frames to be in transit simultaneously. This parallel data flow is responsible for a network performance boost and efficient communications. MPLS gives you certain capabilities not available using Internet or other connectivity transport methods. QOS (quality of service) is central to MPLS as it allows you to prioritize services and traffic in the network, and not just in the router but in the packets themselves. That ability means better performance for VoIP and better video quality.
A wide area network that uses Internet as its primary transport circuits inherently has certain reliability issues. Broadband bandwidth is not guaranteed, its best effort meaning the bandwidth tends to fluxuate. It has security flaws because it is a public network. QOS is not available in the network, but only at the CPE level meaning packets can't be prioritized. Using public networks for connectivity also means VPNs are necessary in order to encrypt your traffic and that means managing CPE at multiple locations and physically needing to be onsite from time to time. SD WAN eliminates some of that by moving the configuration to the cloud but MPLS is still the most secure and most reliable transport for networks.
MPLS improves corporate wide area networks because its stable, secure, and scalable WAN connectivity that can carry multiple types of traffic and provide QOS. Multiprotocol label switching makes it possible to operate various applications across a single network infrastructure. Networks can effortlessly handle bandwidth swell and the dynamic flow of communications across continents or around the world. Segments are joined and new segments can be added. This not only greatly enhances the power and performance of a network, but it brings a level of flexibility that is essential in today’s fast-paced, constantly evolving digital era.