This invention relates to a network architecture comprising : customer locations (1 to 4) on different geographical areas, a private cloud (8) including a MPLS (7) communication service and linking said customer locations (1 to 4) together, a SD-WAN control platform (5), Internet access (6), said SD-WAN control platform (5): assessing at least: a criticality parameter of communications between said customer locations (1 to 4), an Internet availability parameter to transfer said communications, deciding, at least based on said criticality parameter and on said Internet availability parameter, which communications will go over MPLS (7) and which communications will go over Internet (6), so that: more critical communications go over MPLS (7) and less critical communications go over Internet (6), the better said Internet availability parameter is the more communications go over Internet (6), the worse said Internet availability parameter is the more communications go over MPLS (7).