SD-WAN (Software-Defined Wide Area Network) is a modern networking approach that optimizes and manages data traffic across multiple locations using software-based technologies. It enhances network performance, agility, and cost-effectiveness by intelligently directing traffic over various connections, such as MPLS, broadband, or LTE, based on real-time conditions.

1. SD WAN
SD-WAN, or Software-Defined Wide Area Network, is a networking technology that simplifies the
management and operation of a wide area network (WAN) by separating the network control and
management functions from the underlying hardware infrastructure. It provides centralized control,
visibility, and automation to optimize the performance, security, and cost-effectiveness of WAN
connections. Here's a description of SD-WAN and its key features:
Centralized Management and Orchestration: SD-WAN allows administrators to manage and configure
the entire network from a centralized location. Through a management console or software interface,
network administrators can define policies, prioritize traffic, and control the behaviour of the network.
This centralized approach simplifies network management and enables faster deployment of changes
and updates across multiple locations.
Intelligent Path Selection: SD-WAN utilizes intelligent traffic routing algorithms to dynamically select the
most optimal path for data transmission across the WAN. It can evaluate network conditions, such as
latency, packet loss, and congestion, and make real-time routing decisions based on application
requirements and network performance. This ensures that critical applications receive the necessary
bandwidth and that traffic is efficiently distributed across multiple links.
Multiple Transport Options: SD-WAN allows organizations to leverage multiple types of transport
connections, including broadband internet, MPLS, 4G/5G, and satellite links. It enables the aggregation
and management of these diverse connections, providing flexibility, redundancy, and cost optimization.
SD-WAN can dynamically route traffic over different paths based on performance, availability, and cost
factors, enhancing network resilience and reducing reliance on expensive dedicated links.
Application-Aware Traffic Steering: SD-WAN can identify and prioritize network traffic based on
application type, user requirements, or business policies. It enables granular control over bandwidth
allocation and Quality of Service (QoS) policies, ensuring that critical applications receive the necessary
priority and network resources. This improves application performance and user experience while
maintaining network efficiency.
Enhanced Security: SD-WAN incorporates robust security measures to protect data transmitted across
the WAN. It can enforce security policies and encryption for traffic traveling between different locations,
providing secure connectivity. SD-WAN solutions often include built-in firewalls, intrusion prevention
systems (IPS), and advanced threat detection capabilities to enhance network security and protect
against cyber threats.