Consolidation has been an essential part of digital innovation for decades. Many of the features and functions we now take for granted were once stand-alone solutions. TCP-IP used to be a solution you had to purchase and add to your network separately. VPN concentrators were exclusively sold as separate devices rather than as a feature. SD-WAN is no different.
The Security Platform is the Ideal Location for SD-WAN
The whole idea of an integrated security platform is based around the idea that certain essential functions should be part of a single system. Look at the standard features on a security platform: NGFW, IPS, antivirus, anti-malware, AAA services, web filtering, and sandboxing, and others, depending on the platform.
Thanks to Brand Post (see source)