Connecting your business to the cloudTech Trends · Mar 28, 2017
More and more businesses are subscribing to services hosted in the cloud as part of their digital transformation evolution.
Cloud services are accessed via the public Internet. The closer each branch site is to the Internet, the better such Cloud services will perform. Because of this, many organizations are re-visiting their existing corporate WAN topologies to ensure each site is directly connected to the Internet. This is a change from private network WAN topologies – such as MPLS – that share a single Internet feed for the entire multi-site branch network. Historically, all sites would traverse the WAN and access the Internet via the main circuit at their headquarters or data center.
This centralized Internet model does provide security advantages by reducing the number of entry points into your network for malicious Internet-borne attacks. However, it also means sub-optimal user-experience when accessing cloud services. Often, traffic to and from a cloud service may traverse halfway across the country before it hits the corporate HQ site for access to the public Internet.
New SD-WAN topologies provide the best of both worlds where each site can have direct access to the Internet as well as corporate WAN access between offices. Branch networking is built “over the top” of Internet feeds at each office. A split tunnel allows direct access from each site to the Internet and all cloud services. A branch network overlay allows secure site to site connectivity between corporate offices. In addition, most Cloud service providers offer an SD-WAN termination option so that the cloud service (e.g.: Microsoft Azure or Amazon Web Services) can become a secured extension of your corporate branch network. Software Defined WAN (SD-WAN) has made connecting to the cloud easier and more within the reach of many businesses in Canada.
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