
What SD-WAN Can’t Do, But SASE Can


Over the last years, SD-WAN has been the logical step forward. It solved the inefficiencies of rigid, costly MPLS networks by delivering faster, more reliable, and more cost-effective connectivity. When networking starts to feel more like a ‘coffee-shop experience’, dynamic, flexible, and everywhere, SD-WAN just isn’t enough.
The future is SASE – Secure Access Service Edge.
Why SD-WAN Falls Short
SD-WAN typically enables direct internet access at branch locations, avoiding the need to backhaul to HQ — which is the whole point.
However, when security isn’t integrated, companies may still backhaul to central firewalls or data centers to apply consistent policies — and that’s where the performance hit happens.
In short: SD-WAN enhances connectivity; but it was never meant to deliver the robust, integrated security enterprises now demand.
Enter SASE: Networking + Security as One
SASE converges networking and security into a unified, cloud-delivered service. SD-WAN remains part of the foundation, but SASE goes further by embedding native security through Security Service Edge (SSE) capabilities such as:
- Zero Trust Network Access (ZTNA)
- Secure Web Gateway (SWG)
- Cloud Access Security Broker (CASB)
- Firewall as a Service (FWaaS)
- Advanced Threat Protection
According to leading analysts, by 2028, 70% of SD-WAN purchases will be part of a single-vendor SASE platform, up from just 25% in 2025.
How SASE Delivers Business Value
SASE does more than extend SD-WAN. It enables enterprises to:
- Improve Cybersecurity – Centralized, built-in protection eliminates silos and enhances resilience.
- Lower TCO – Consolidation of tools and services reduces complexity, hardware, and licensing costs.
- Simplify Compliance – Centralized controls, reporting, and audit readiness support regulations like DORA, NIS2, and the AI Act.
- Accelerate Cloud Transformation – Cloud-native agility, scalability, and simplified M&A integration.
- Advance Zero Trust – Enforcing “never trust, always verify” at every level.
- Enable Hybrid & Remote Work – Extending secure, responsive connectivity to users everywhere.
Why Act Now
SD-WAN was the right move for its time. But in complex, global set-ups and the compliance-heavy, threat-rich world we are in, SASE is the future-proof solution. It brings together networking and security in one seamless platform, supporting secure global growth, hybrid workforces, and regulatory compliance – all without compromising performance.
Open Systems: Your SASE Partner
At Open Systems, we deliver managed SASE services that unify security and networking on a cloud-native platform. With 24×7 expert support and decades of experience, we help organizations simplify operations, strengthen cyber resilience, and accelerate innovation.
Ready to see how SASE can transform your enterprise? Contact us today for a free assessment.
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