The document discusses SD-WAN architecture and security. It describes how SD-WAN provides secure connectivity across any transport, between enterprise and cloud datacenters, in a scalable and automated way. It also allows for segmentation within enterprises and between tenants, and enables security services insertion at branches, in distributed environments, and across clouds and vendors. SD-WAN provides secure deployment through automated branch provisioning and infrastructure security, and gives visibility into user and application activity as well as compliance and security analytics.