Moving to the cloud is an action that has gained popularity among organizations in the past years. There are numerous cloud services available on the market and we can see how this is affecting organizations and the infrastructure. We can also notice that SD-WAN architecture has also become a popular choice for many organizations.
You might be wondering how these two are connected. For example, many SD-WAN services also come with Cloud Network, and that is no coincidence. Let’s try to understand the connection between these two.
Traditional WAN architecture models have become a bit outdated if we take a look at the new app models. Therefore, when accessing apps stored in the cloud, the process will become more complicated than it needs to be, which means that bandwidth will be wasted and costs will be higher.
The rigid WAN architecture can also be a problem and organizations find it hard to manage the traditional model because processes and network changes become lengthy which is not efficient at all.
All these issues are handled by the SD-WAN solution. This technology comes with all the needed shortcuts for app consumption which means that unnecessary hops are avoided and performance is enhanced. Accessing an app stored in the cloud can be done directly, without going through HQ data center.
More than that, the performance enhancement process becomes automated, so human intervention is no longer needed. Even when packets are lost, SD-WAN technology is able to come up with a solution automatically.
In addition to that, it is also possible to connect various WAN transport services so that a larger connection is connected. An overlay tunnel appears and it can be used to load-share traffic for a single application, enhancing its performance.
Security is improved with the help of this technology. Encrypted tunnel traffic can be used for communications between end points, which reduces the risks. It is also possible to limit the traffic that comes to the branch, so that it is constrained to the sessions that were initiated by users internally.
Intelligent traffic steering is another major advantage. Apps are being identified based on the first packet that is received. Both HTTP and HTTPS traffic insights are required for this process. Traffic is then steered on the correct link and that is done by identifying the business intent.
It is very important that traffic is steered based on the first packet and not on any other one, because this means that bandwidth won’t be unnecessarily wasted and compliance requirements will be met. We should also add that if the TCP connection is NATed with a public IP address the process can’t be reversed.