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SD-WAN Yields Better Network Performance for Cloud Solutions

W ANs enable companies to extend their computer networks over large distances to connect remote offices to data centers and each other, and for the delivery of applications and services required to perform business functions.  

When companies extend networks over great distances and across multiple carrier networks, they can run into operational challenges, such as network congestion, packet delay or loss, and potentially service outages. Business-critical applications, such as VoIP calling, videoconferencing, streaming media, and virtualized desktops demand low latency.  

It can not only be difficult, but also costly to expand a business’ WAN capability with additional challenges related to network management and troubleshooting. Software Defined WAN (SD-WAN) addresses these network problems by improving or even replacing traditional branch routers with virtualized appliances that control application-level policies and offer network overlay. Less costly consumer-grade Internet links can then act as a dedicated circuit which simplifies the setup process for branch personnel. SD-WAN can be delivered via physical hardware or virtual appliances placed in offices, corporate data centers, and on cloud platforms. 

A centralized controller is used to set policies and prioritize traffic. The SD-WAN uses these policies and the availability of network bandwidth to route traffic which enables application performance to meet service level agreements (SLAs). 

Benefits of SD-WAN

If you’re considering SD-WAN adoption, alleviating concerns about the reliability of your Internet connection, improving the reliability and security of your network and increased bandwidth are the first benefits that come to mind, followed by potential cost savings.  

Overall advantages of SD-WAN adoption: 

  • Business agility
  • Heightened network security 
  • Improved application performance 
  • Lower bandwidth costs 
  • Increased reliability  
  • Greater network bandwidth 
  • Enhanced SLA’s 
 How do I know if I need SD-WAN

Questions to consider when determining if your organization can benefit from SD-WAN. 

  • What network services do you currently have in place? 
  • If you have an existing MPLS, what are you looking to change about your network services?  
  • What challenges and/or limitations are you experiencing with your current MPLS?
  • What sort of planned events do you have on your network that affect your bandwidth usage? 
  • How do you manage network and security policies at your branch/remote sites? 
  • What applications would you consider heavy usage at your organization? 
  • What methods are you using to handle mission-critical (and non-critical) apps so they don’t bog down your available bandwidth? 
  • What causes your critical applications to perform poorly? 
  • How are you managing personal and corporate devices that stream videos, games, movies, etc.? 
  • What are your non-critical applications (guest Wi-Fi, social media, YouTube, etc.)? 
  • What does your customer’s experience typically look like?
  • What tools are you currently using to measure their experience?> What trends are you noticing in your industry that may change this?
  • How are your competitors leveraging technology to improve customer interaction and engagement? 
  • Are you exploring any new ways to monetize the digital experience? 
  • What new applications are you planning to roll out in the next 12-18 months? 
  • Do you expect more applications to move to the cloud in the next 18-24 months? 
  • What are your biggest challenges with application rollout and support (ex. installing patches, monitoring performance, ensuring adequate bandwidth, etc.)? 
  • What is the current performance level of business applications (ERP, CRM, etc.) and cloud-based applications?  
  • Do you experience any connectivity issues when employees are accessing tools or resources? 
  • Do you experience issues with application performance or latency that is impacting the productivity of your employees? 
  • Are there busy periods or times of the day that your employees have trouble accessing the network?  
  • Does network or application performance ever effect employees’ customer service? 


Read more about SD-WAN here.