In general, the level of support an organization receives for SD-WAN is dependent on size. Large firms tend to do the majority of their SD-WAN-related activities in-house, relying on their own engineering staff. Mid-sized firms often adopt a hybrid approach, farming out some operations to third-party vendors while maintaining others themselves. Smaller organizations often lack the expertise to manage SD-WAN themselves and so they frequently contract SD-WAN companies to take over the process for them.
More info @ top sd-wan vendors
