Monday, February 17, 2020

Why SD-WAN & Benefits Of SD-WAN




What Is SD-WAN - SD-WAN is a software-defined approach to administer WAN.

The main advantages are:

  • Cost savings thanks to the independence of transport between MPLS, 4G / 5G LTE, and other types of connections.

  • Better application performance and greater agility.

  • Optimization of user experience and software efficiency as a service (SaaS) and public cloud applications.

  • Simplify operations with cloud-based automation and management.


Why now for SD-WAN

I Have A Traditional Wan
The traditional function of the wide-area network (WAN) was to connect branch or campus users to applications hosted on the servers in the data center. Typically, dedicated MPLS circuits were used to ensure security and reliable connectivity. It doesn't work in a cloud-centric world.

Current It Challenges

The times have changed. As organizations embrace the use of SaaS and infrastructure applications as a service (IaaS) across multiple clouds, IT realizes that the user's application experience is poor. Indeed, WANs built for another era are not ready for the unprecedented explosion of WAN traffic that comes with the adoption of the cloud. This traffic leads to management complexity, unpredictable application performance, and data vulnerability.

The greater openness of the company to the Internet and the cloud exposes significant threats and compliance issues. Protecting critical business assets, is extremely difficult when a diverse workforce, including employees, partners, contractors, suppliers and guests, access applications. Enabling broadband over the WAN improves security requirements, creating IT challenges, balancing user experience, security and complexity.




What Are The Benefits Of Sd-Wan

Traditional WAN architecture was limited to companies, branches, and data centers. When an organization adopts cloud-based applications in the form of SaaS and IaaS, its WAN architecture experiences an explosion of traffic that accesses applications distributed worldwide.

These changes have multiple implications for IT. Performance issues can compromise employee productivity with SaaS applications. WAN expenses can increase with the inefficient use of dedicated and backup circuits. IT fights a complicated daily battle to connect multiple types of users with various kinds of devices to different cloud environments.

With SD-WAN, IT can provide routing, threat protection, efficient download of expensive circuits, and simplification of WAN administration. Financial benefits may include the following:

Best application experience

High availability, with predictable service, for all critical business applications
Multiple active-active hybrid links for all network scenarios
Dynamically routed application traffic with application-specific routing for efficient delivery and enhanced user experience
Improved OpEx, which replaces expensive MPLS (Multiprotocol Label Switching) services with cheaper and more flexible broadband (including secure VPN connections)
More security

Application-oriented strategies with end-to-end segmentation and real-time access control.
Integrated threat protection applied in the right place
Secure broadband internet and cloud traffic
Distribute security on terminals and remotes with NGFW, DNS, and NGAV security
Optimized cloud connectivity

Transparent WAN extension for multiple public clouds
Optimized real-time performance for Microsoft Office 365, Salesforce and other critical SaaS applications
Streamlined workflows for cloud platforms such as Amazon Web Services (AWS) and Microsoft Azure




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