How does SD-WAN handle SaaS traffic differently from Internet traffic?

• A. SaaS traffic is directed to cloud onramps/PoPs and delivered with optimized paths and policies; Internet-bound via DIA or HQ; policies ensure SaaS follows the optimal path.
• B. SaaS traffic uses same path as Internet traffic; policies do not differentiate.
• C. SaaS is blocked by default and must be routed through VPN to HQ.
• D. SaaS traffic always exits via Internet without policy considerations.

Answer: (A)

SD-WAN treats SaaS traffic differently by steering it directly to the SaaS provider’s cloud edge through cloud onramps or PoPs, and applying specific policies and optimized paths to reach the SaaS application. This direct, cloud-enabled exit is chosen based on real-time path quality, so SaaS traffic routinely uses the most efficient route, while Internet-bound traffic can exit via direct Internet access (DIA) or through a headquarters exit according to the policy. The key idea is that SaaS destinations are recognized and routed via dedicated cloud access points with tailored path selection and QoS, rather than being treated the same as generic Internet traffic.

Other options miss this SaaS-aware distinction: the second suggests no differentiation, which would ignore optimization for cloud apps; the third implies SaaS must always go through VPN to HQ, which backhauls traffic and undermines SaaS performance; and the fourth implies SaaS always exits to the Internet without policies, ignoring the SD-WAN capability to route SaaS via cloud onramps for better performance.