MPLS still represents a foundational technology
in most global enterprise WANs.
MPLS can deliver high availability and deterministic quality of service within a service provider’s domain, hence network managers have been relying on MPLS for 20 years.
On the other hand, MPLS is costly, slow to deploy, and its traditional hub-and-spoke architecture from the branch to HQ and/or the DC does not support the overwhelming need to optimally support cloud deployments.
Do-it-yourself SD-WAN solutions allow traffic to be routed directly to the internet at the branch, however they often still rely on costly MPLS links to support traffic that is perceived as business critical.