According to updated reports of the Dell’Oro Group, there are five top SD–WAN vendors who are running toe-to-toe for supremacy in the SD–WAN market share. The year 2019 was seen as a breakout year for the adoption of SD–WAN when it surpassed a $1 billion market share. According to already mentioned reports, Cisco, Versa Network, VMware, Silver Peak and Fortinet are holding high ranking positions, as these top SD–WAN market leaders accounted for a 60% accumulated share in the generated revenue in 2019. But none of them surpassed a 20% share of the market, which shows a high potential for competition among the market giants for dominance. That is why these are still early days for penetration into the market.