No matter which market share report is considered, either Cisco or VMware holds the top SD–WAN vendor ranking. Both these giants have been battling for supremacy in the SD–WAN market ever since they began to spend millions of dollars in this field. Cisco paid 600 million dollars to buy Viptela in 2017, and VMware paid 450 million dollars to buy leading SD–WAN startup VeloCloud in the same year.
