Software-Defined Wide Area Networks (SD-WAN) represent the fourth generation of WANs, offering significant improvements over traditional WAN technologies like MPLS and frame relay. As organizations increasingly rely on data-intensive applications and cloud services, SD-WAN addresses challenges such as high costs, latency, complexity, and security risks. Unlike traditional WANs that route traffic through centralized data centers, SD-WAN enables direct internet access, reducing bandwidth usage and enhancing performance. It ensures stable connectivity for remote sites, supports real-time applications, and simplifies network management through centralized control, making it a cost-effective and scalable solution for modern enterprises.

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