Comparing SD-WAN solutions for application optimisation

Linking two sites by buying and laying cable is very expensive and complicated. Leasing a line from a telecom company is also costly. The most affordable way to connect sites is using the internet. SD-WAN uses techniques to create a private network over the internet, known as an "overlay network." 

This turns internet-connected LANs into a WAN through software. In a 2022 survey of WAN managers, 47% said they had already set up SD-WAN, and another 39% were either testing it or starting to implement it.

SD-WAN needs a device to connect to the internet. You can either route all internet traffic through a server with the necessary software (a virtual solution) or buy a special device with built-in SD-WAN software.

Understanding the importance of application optimisation in SD-WAN

SD-WAN optimisation enhances WAN performance and reliability, which are crucial as organisations adopt modern applications and remote workforces. It makes better use of existing bandwidth, reducing costs and improving user experience. It also supports network scalability and agility, enabling networks to handle increasing traffic without degradation.

SD-WAN software, whether on a computer, appliance, or cloud server, unifies the address space of all participating LANs, forming the WAN. Although the Internet has a different address space, SD-WAN's encapsulation procedures resolve this, allowing the network to function as a private WAN despite using the Internet.

SD-WAN optimisation techniques

WAN acceleration uses various techniques to maximise data flow efficiency over WAN links, addressing latency, bandwidth constraints, and packet loss.

• Data caching and deduplication: Stores frequently accessed information locally and eliminated duplicate data to reduce WAN traffic and speed up transfers.
• Data compression: Shrinks data files to use less bandwidth, improving transfer speeds.
• Traffic shaping and prioritisation: Manages data flow to prioritise critical applications, ensuring prompt delivery.
• Protocol optimisation: Streamlines communication by reducing unnecessary acknowledgements and handshakes, lowering latency and improving transfer rates.
• Network monitoring: Continuously monitors traffic to allocate resources efficiently, ensuring essential business functions are not impeded by nonessential traffic.

Considerations for selecting an SD-WAN solution for application optimisation

Applied technologies can assist in selecting and implementing the right SD-WAN solution tailored to your business needs. 

SD-WAN solution architecture

Decide if you prefer a cloud-based, on-premise, or hybrid SD-WAN architecture. Cloud-based solutions such as Tata Communications' IZO™ SDWAN require less hardware and can be updated automatically, ideal for companies without dedicated IT staff. On-premise solutions offer more control and may feel more secure. A combination of both is often most effective, depending on your specific needs.

Network security

Ensure the SD-WAN solution has robust security features like encryption and advanced threat protection. Cloud-based solutions typically offer regular security updates, while physical solutions require manual updates. Choose a provider that prioritises security.

Connectivity and bandwidth

Consider your current and future bandwidth needs. Select an SD-WAN solution that can scale with your growing requirements. Look for SD-WAN optimisation features to maximise performance, especially if you have locations with limited connectivity options.

Cost savings

SD-WAN can reduce costs by using cheaper public internet circuits instead of expensive private ones. It allows for secure traffic over public networks, providing reliable and cost-effective internet access with redundancy in case of failures. This is particularly beneficial for remote workers.

Management complexity

Evaluate your resources for managing the SD-WAN solution. Avoid overly complex systems if you lack the necessary personnel. SD-WAN solutions with features like zero-touch provisioning can simplify management, especially for companies with many sites or limited IT support.

Automated traffic routing

An SD-WAN solution should automatically route traffic based on network performance, prioritising critical applications. Advanced systems can monitor and adjust in real-time, ensuring essential traffic gets the bandwidth it needs while optimising overall network performance.

Conclusion

SD-WAN optimisation enhances data transfer efficiency across wide-area networks by using techniques such as data deduplication, compression, and protocol optimisation. 

Also, solutions such as IZO™ SDWAN improve application performance, user experience, and bandwidth utilisation while reducing costs and supporting business continuity. WAN optimisers, available as hardware, virtual services, or software, address latency and packet loss challenges. 

Despite real-time applications and encrypted traffic difficulties, integrating WAN optimisation with SD-WAN provides a comprehensive solution. This combination ensures efficient, secure, and reliable network performance, benefiting organisations with geographically dispersed locations and growing data demands. Sign Up For A Free IZO™ SDWAN Trial today.