SD-WAN technology has gained extensive adoption, and today there are multiple architectures available to meet diverse business needs. Below is an overview of some of the most widely used SD-WAN architectures, detailing their unique characteristics and advantages.

Local SD-WAN Architecture

The local SD-WAN architecture is a straightforward implementation method that allows SD-WAN edge devices to be flexibly deployed at various locations within an enterprise. Typically, it does not require the use of SD-WAN switches, enabling direct connections between sites or across the network. This architecture allows SD-WAN components to be distributed at one or more locations, making it ideal for businesses that rely primarily on internal SaaS systems instead of cloud-managed applications. As a result, this configuration can reduce operational costs and simplify network maintenance.

Cloud-Based SD-WAN Architecture

The cloud-based SD-WAN architecture connects devices through a cloud-hosted SD-WAN switch, offering real-time data control, multi-path load balancing, failover support, and convenient access to cloud applications. This architecture is compatible with popular applications such as Office 365, Salesforce, and Dropbox. It enables enterprises to run critical cloud-based applications over small MPLS channels while routing other applications over public internet connections, thereby effectively lowering overall costs.

By connecting to POP (Point of Presence) network nodes, the cloud-based SD-WAN architecture allows MPLS channels to directly interface with major cloud providers, improving application reliability and performance. This deployment model is particularly well-suited for companies requiring a full SDN structure with a focus on broadband service quality. By offloading non-essential applications to cost-effective broadband networks, the architecture can provide greater bandwidth for mission-critical applications and enhance performance across the board.

Key Considerations for Selecting an SD-WAN Architecture

To achieve optimal results, consider the following factors when selecting an SD-WAN architecture:

Dynamic Path Selection

SD-WAN should support dynamic path selection, allowing routes to adjust in real-time based on application demands and data flow. Additionally, the solution should be capable of automatically recognizing and optimizing a wide range of applications running on the network.

Robust Security

Security is fundamental to SD-WAN architecture. A robust SD-WAN solution should include high-level security measures such as external firewall protection, data encryption, and support for third-party security tools and VPNs.

Future Media Compatibility

An SD-WAN solution should not only support current media types but also have the flexibility to accommodate emerging media and technology in the future.

Essential Reporting Features

Reporting capabilities, though often overlooked, are essential in SD-WAN implementations. Ensure the solution can deliver critical network insights and reports to support informed business decisions.

Additional Factors

When selecting an SD-WAN architecture, it’s crucial to first determine whether the company will manage the system in-house or rely on third-party service providers. Comprehensive evaluation of organizational needs should guide the choice of an appropriate structure. Lastly, SD-WAN must provide high availability and flexibility to adapt to evolving network requirements.

This guide aims to give you a clearer understanding of the types of SD-WAN architectures commonly in use and the criteria to consider when selecting one. Proper SD-WAN network deployment ensures businesses receive the best possible support for their network needs. For further assistance, feel free to consult with Ogcloud, a network service provider.