SD-WAN Software Defined Software-Defined WAN

Edge WAN Platforms (Global Market)

Main Article: Boundary WAN Platforms (Global Market)

Software-Defined SD-WAN Technologies

The SD-WAN solution involves the automatic formation of a private network and the transfer of information over all types of available communication channels, without losing the speed and quality of applications. For example, previously, only an expensive VPN channel was used to transmit voice or video without failures. Now, due to SD-WAN, you can use only the Internet channel and LTE as a backup. Thus, customers can save on paying bills from telecom operators and resolve the issue of VPN channel reservation in a simple and cheap way.

SD-WAN technology is based on a smart controller, thanks to which traffic is automatically redistributed. In addition, the device allows you to centrally change the settings of network equipment in branches, monitor the state of the network, download and quality of channels in online mode, and fix problems that arise. This ensures the transparency of data networks and reduces the burden on IT specialists serving the network.

Companies are gradually moving to centralized networks using cloud technology, mobile access or the Internet of Things network. According to Gartner estimates, about 30% of companies in 2016 already use public cloud services, and this figure will increase by 17% annually.

SD-WAN technologies have replaced classic WAN building solutions as easier to deploy. Among the main tasks that customers solve with their help are intelligent management of traffic transmitted from the center to branches and vice versa, a single point of WAN infrastructure management and monitoring, and reducing operational costs for infrastructure management.

High performance and optimized management drive the popularity of SD-WAN solutions. SD-WAN technology is useful for customers engaged in digital transformation of their business, which requires a high-performance connection to SaaS or a multi-cloud environment.

See also

• SDN Software-Defined Network Solutions and Projects Catalog Software-Defined Networks
• Data centers of Russia and technologies for data centers
• Virtualization Solutions and Projects
• NFV Network Functions Virtualization
• Software-Defined Optical Network (SDON) Software-Configured Optical Networks

Principles of software-defined networks

SD-WAN technology (software-defined WAN network) is based on the application of software-defined network (SDN) principles to distributed corporate networks. First of all, this is the separation of Control Plane from Data Plane processing by transferring control functions (routers, switches, etc.) to an application running on a separate server (controller).

SD-WAN allows you to centralize the management of the distributed infrastructure, since the entire network is provided by the controller located at the head office.

• As defined by Gartner, SD-WAN solutions must have the following characteristics:
• Support for various types of connections, including MPLS (multiprotocol label switching - "multi-protocol label switching," the most common data transfer mechanism in modern computer networks), mobile LTE data transfer standard, etc.;
• "Dynamic," in real time, selection of data transmission route for network load balancing;
• A simple management interface that simplifies the configuration process (compared to the command line);
• The ability to support VPN, as well as other third-party services (WAN optimizers, firewalls, Internet gateways).

2023: Leaders changed in global SD-WAN market

In 2023, Cisco Systems, HPE, Aruba, Versa Networks, Palo Alto Networks, Fortinet and VMware were among the leaders in the global SD-WAN (software-defined global network) market. Such data are reflected in the Gartner study, the results of which were released on September 27, 2023.

Based on the data obtained, Gartner analysts formed the so-called Magic Quadrant: this is a two-dimensional diagram on which the "completeness of vision" is deposited along the abscissa axis, and the "ability to realize" along the ordinate axis. Thus, each player in the industry finds himself in one of the four quadrants of the plane, where the leaders demonstrate the best indicators for both of these parameters.

In 2023, the report includes one new company - Sophos, whose activities meet Gartner's criteria for the development of the SD-WAN direction. At the same time, Citrix was excluded from the rating, which publicly announced its intention to leave the SD-WAN market at the end of 2022. Named as niche players are Barracuda, Cradlepoint, Forcepoint, Nuage Networks, Peplink and Sophos. Gartner considers the telecom corporation Huawei to be a contender for leadership, and Juniper Networks is a far-sighted player. The leaders listed above have the greatest impact on the industry.

Cisco

This company's strategy addresses the current and future needs of SD-WAN enterprise customers in terms of artificial intelligence, security, scalability, and the journey to the cloud. However, as noted by Gartner, compared to other companies presented in the 2023 report, Cisco has a lower than average customer experience.

HPE Aruba

This vendor's solutions benefit from optimized performance, cloud, and operational capabilities. The company has a high quality customer service. The weak side is a disparate family of products designed for different use cases, which can lead to confusion among customers.

Versa Networks

The company offers a complete SD-WAN platform with reliable routing and application management functions, security, cloud access and flexible deployment tools. At the same time, two products with different capabilities are available - Versa Secure SD-WAN and Versa Titan, which is why customers may make incorrect choices.

Market leaders barely changed in a year

Palo Alto Networks

This provider's innovation in AIOps (artificial intelligence for IT operations) and policy control creates benefits for customers, and customer service is rated above average. On the other hand, the performance optimization capabilities of Palo Alto Networks products are limited, and prices are quite high.

Fortinet

The company offers a powerful set of security-focused features. Fortinet plans to introduce generative artificial intelligence into its products and use a "as a service" model that Gartner believes could provide the market with "revolutionary opportunities." However, some customers have expressed concern about Fortinet's ability to meet the demands of complex configurations and architectures. In addition, the quality of customer service is below average.

VMware

The company has a wealth of customer experience and plans to introduce advanced AI functions. But VMware lags behind competitors in terms of security features that are initially available on its client devices.^[1]

2022: World SD-WAN market leaders named

In September 2022, Gartner analysts published a study (the so-called magic quadrant) on the global Software-Defined Wide Area Network (SD-WAN) market. One of the industry leaders is named Cisco Corporation, which specializes in network equipment for large organizations and telecommunications providers.

The first Gartner report on the SD-WAN market was released in 2018, then it included 20 vendors. In 2022, 14 manufacturers were included in the list, which is explained by the consolidation of the industry. The leading group includes the American corporation Forcepoint, a subsidiary of Raytheon Technologies. In the Forcepoint product family, FlexEdge Secure SD-WAN solutions. The company focuses on areas such as retail, healthcare, the banking sector and government entities. At the same time, niche players Riverbed and Fat Pipe dropped out of the rankings.

Gartner predicts that by 2025, about 50% of all SD-WAN purchases will be part of a set of edge secure access services (SASE) from a single provider. For comparison: this year this figure will be only 10%.

In addition, it is expected that by 2026, approximately 30% of new acquisitions in the SD-WAN area in one form or another will be distributed according to the NaaS model, or "network as a service." Currently, this segment is practically not developed.

As noted, the 2022 Gartner Magic Quadrant for SD-WAN is led by Cisco, which offers solutions such as Cisco SD-WAN powered by Viptela and Cisco SD-WAN powered by Meraki. It is estimated that the customer base of the company in the corresponding segment has about 43 thousand customers of various sizes around the world.

This is followed by the American corporation Fortinet, which specializes in the development and promotion of software, solutions and services in the field of information security. The company offers FortiGate Secure SD-WAN, and the customer base is about 19 thousand customers.

Next comes Hewlett Packard Enterprise (HPE) Aruba, which offers Aruba EdgeConnect Enterprise and Aruba EdgeConnect SD-Branch solutions that include physical and virtual nodes. The client base is approximately 4,000 users.

Gartner's first report on the SD-WAN market in 2022

The rating also includes Palo Alto Networks with its Prisma SD-WAN product: the customer base is estimated at 2,500 corporate users. Then comes Versa Networks, which offers the Versa Operating System (VOS) platform based on Cloud Services Gateway (CSG) and the VOS with Titan solution. According to estimates, the company's customer base in the SD-WAN segment reaches 19 thousand.

A well-known solution provider virtualizations VMware was also included in the list: the company provides a VMware SD-WAN product. The number of customers in the SD-WAN segment exceeds 17 thousand.

Gartner published a study on the global market for software-defined distributed networks

The ranking includes the Chinese telecommunications giant Huawei, which has come under harsh American sanctions. The company's key SD-WAN products are NetEngine AR routers, HiSecEngine USG gateways, and the iMaster NCE Orchestrator platform. The customer base is more than 25 thousand customers.

In addition, the list includes Barracuda Networks (more than 11 thousand customers), Citrix (over 1700 customers), Cradlepoint (approximately 10 thousand WAN edge customers), Nuage Networks (more than 3500 users), Peplink (client base not disclosed), mentioned Forcepoint (more than 2000 customers) and Juniper Networks (over 1900 clients).^[2]

2021:35% market growth to $2 billion

Global spending on hardware and software for deploying software-defined wide area networks (SD-WAN) in 2021 exceeded $2 billion, a new record. In comparison with 2020, the volume of this market increased by 35%, analysts at Dell'Oro Group, whose data was published on March 9, 2022, calculated.

SD-WAN Build Diagram

The following companies are named the largest manufacturers of SD-WAN solutions for 2021:

• Cisco;
• Fortinet;
• VMware;
• Versa Networks;
• HPE.

The shares of these vendors are not indicated, but it is noted that the eight leading manufacturers in 2021 accounted for more than 80% of the global SD-WAN market. The study also reports that Fortinet has risen to second place, but the company's previous position has not been disclosed.

Demand for SD-WAN solutions grew in 2021 as companies continued to optimize their branch network architectures for their cloud services and workflows, says Shin Umeda, vice president of Dell'Oro Group, commenting on the study. - The [COVID-19 coronavirus] pandemic has created unmet demand, which not only accelerated market growth in 2021, but also prompted businesses to evaluate and implement SD-WAN for a more distributed workforce.

The convergence of SD-WAN and network security is being used by many manufacturers as a way to differentiate their solutions for software-defined wide area networks, analysts said. It is noted that vendors are increasingly using security functions in their SD-WAN products to distinguish them from competitors.

The report also said global router sales continued to decline in 2021 as companies shifted their spending to SD-WAN software solutions for branch infrastructures.

According to MarketsandMarkets analysts, the global market for software-defined networks and data centers (SDN, SD-WAN and SDDC technologies) is growing due to increased demand for virtualization and cloud computing in data centers. With them, companies get unified management of all data center components, such as network, server, storage, security, and other resources. Owners of large-scale IT infrastructures, such as cloud service providers, carriers and corporations, are increasingly using software-defined technologies.

Experts pay attention to the fact that the software-defined infrastructure is not tied to certain equipment and can function almost without the intervention of specialists. This model allows you to fully integrate and automate many critical IT features.

SD-WAN market up 35% to set new record

Complete data center virtualization provides flexibility to configure compute, network, and storage resources that are performed at the application level using common hardware. Software-defined infrastructure allows you to place work tasks in private or public clouds, preserving data integrity, improving performance and efficiency, and reducing costs.

The WAN peripheral infrastructure market continues to shift from traditional enterprise-class routers used to connect branch offices to the data center to SD-WAN with more decentralized architecture and cloud services.

Analysts consider the digital transformation of the business as an important factor in the growth of the market, during which companies introduce technologies of the "third platform" - cloud, mobile, social, as well as methods for processing and analyzing large amounts of data. An important role is played by the growing popularity of Solutions SaaS in public cloud services and the introduction of software-configurable network technologies in corporate networks.^[3]

2020: SD-WAN Market Growth by 32% - Dell'Oro Group

The volume of the global market for hardware and software for the deployment of software-defined global networks (SD-WAN) in 2020 increased by 32%, which is half the growth rate in 2019. This was reported in the research company Dell'Oro Group without specifying absolute values.

Experts only predict that by 2025 the market in question will reach revenue of $4 billion and will grow by an average of 24% per year.

The SD-WAN market grew by a third in 2020. Rating

Dell'Oro Group Vice President Shin Umeda says that by the end of 2020, the SD-WAN market has begun to recover COVID-19 due to the delayed demand due to the coronavirus pandemic and the accelerated abandonment of companies from outdated technologies. As a result, market volume soared 50% year-on-year in the fourth quarter.

Shin Umeda called the dynamics of the SD-WAN market "impressive," given the serious macroeconomic problems caused by the consequences of the coronavirus pandemic.

The pandemic has led to some delays in the implementation of SD-WAN projects in 2020, but the main demand factors for the modernization of WAN infrastructures remain strong. When the situation with macroeconomics and the pandemic becomes clearer, companies in 2021 will actively implement their strategic investments in SD-WAN, which, in turn, will help accelerate market growth, the expert said.

The Dell'Oro Group study also showed that software accounted for more than 80% of SD-WAN technology sales in 2020, and the share of this segment will only increase in the next five years.

The Dell'Oro Group report says that the largest manufacturer of hardware and software for deploying software-defined global networks at the end of 2020 remained Cisco. Next are the companies, VMware, and Fortinet/ Versa Networks (HPESilver Peak listed by market share size).

The researchers do not specify the shares of vendors. The report only notes that the top five manufacturers accounted for about two-thirds of SD-WAN infrastructure sales. In 2020, the market continued to consolidate - a small number of players increased their shares, leaving even fewer revenue opportunities for competitors.

Global Software and Software for Deployment of Software-Defined Wide Area Networks (SD-WAN) Market Size Increased by 32% in 2020

One of the trends of 2020 in the SD-WAN market, analysts called the fact that manufacturers began to use various information security technologies in their solutions more often in order to stand out from competitors and contribute to the growth of their own business.

According to analysts, the volume of the global market for software-defined networks and data centers (SDN, SD-WAN and SDDC technologies) by 2024 will reach $160.8 billion against $51.7 billion in 2019. The annual growth rate is expected at 25.5%.

Analysts consider the main catalysts for the growth of this market to be an increase in demand for virtualization and cloud computing in data centers. With them, companies get unified management of all data center components, such as network, server, storage, security, and other resources. Owners of large-scale IT infrastructures, such as cloud service providers, carriers and corporations, are increasingly using software-defined technologies.

In addition, the active introduction of mobile technologies and the adoption of BYOD policies (companies ask employees to use personal gadgets for work purposes) led to the deployment of tablets, smartphones and laptops. The need for an acceptable network infrastructure that meets the latest security policies, as well as providing uninterrupted communication, can stimulate demand in the global SD-WAN market, analysts say.^[4]

2018: 64.9% rise to $1.37 billion - IDC

Global sales of equipment and software for deploying software-defined wide area networks (SD-WAN) in 2018 amounted to $1.37 billion, an increase of 64.9% compared to the previous year. Such data were released by IDC analysts on July 24, 2019.

According to them, the SD-WAN infrastructure is an important segment of the enterprise network solutions market, which will demonstrate annual growth of 30.8% and reach a volume of $5.25 billion by 2023.

The global SD-WAN solutions market soared 65% in 2018.

In IDC terminology, SD-WAN refers to dynamic hybrid WAN networks that use at least two connection methods, such as MPLS, broadband Internet access, 3G, LTE, etc. They also use an SD-WAN controller, which provides flexible and fast management of information  security policies, and an optional device for choosing the direction of traffic transmission in a routed network.

Such systems, according to experts, simplify the digital transformation of the business, as well as contribute to the transition to cloud technologies. SD-WAN networks are replacing outdated traditional geographically distributed networks, as smartphones once replaced ordinary mobile phones.

According to IDC analyst Rohit Mehra , the SD-WAN segment will remain one of the fastest growing in the network infrastructure market due to several factors.

First, traditional WAN networks in companies are increasingly not meeting the needs of today's digital business, especially in terms of supporting SaaS applications and using multiple and hybrid clouds. Secondly, enterprises are interested in easier management of several types of connections in their WAN network to improve application performance and end-user experience. These trends, along with the rapid adoption of SD-WAN by the world's leading communication service providers, will continue to stimulate the deployment of software-defined wide area networks, providing businesses with dynamic management of hybrid WAN connections and the ability to guarantee a high level of service quality for each application, Mehra said.

The study notes that experienced network solution manufacturers use their technological advantages and a large number of customers to sell routers and systems for WAN optimization, which allowed them to lead the SD-WAN market. At the same time, there are many startups that are actively developing business.^[5]

IDC calls the company the largest manufacturer of infrastructure for SD-WAN Cisco and explains its decision by the presence of an extensive portfolio of routing technologies in the American corporation, which is used in SD-WAN projects. In addition, Cisco is helped by the company's products (Meraki bought in 2012 for $1.2 billion) and the SD-WAN management platform, built on the technologies of another subsidiary - (Viptela absorbed in August 2017).

Largest manufacturers of SD-WAN solutions, IDC data

Researchers give the second place in terms of revenue from the implementation of SD-WAN solutions to VMware, which has a strong market position thanks to the purchase of VMware startup VeloCloud in 2017. Analysts also included Silver Peak, Nokia-Nuage and Riverbed Technology in the top 5 leaders.

Analysts at Dell'Oro Group expect global spending on hardware and software used to deploy SD-WAN networks to grow by an average of 35% per year and reach $2.2 billion by 2022. Moreover, sales of software components, such as controllers and virtual network function systems, will grow twice as fast as hardware - by 41% and 21% annually, respectively.

2017

Frost & Sullivan Data

In 2017, the SD-WAN market grew by about 83% - to $833 million. According to a global survey conducted by Frost & Sullivan, this technology is among the top three priorities of companies along with hybrid cloud services and application security. The survey found that 33% of businesses have deployed or are in the process of deploying SD-WAN, while 61% intend to complete such projects within the next two years.

According to IDC estimates, the SD-WAN infrastructure construction market will grow by an average of 40% per year in the near future and will reach $4.5 billion by 2022. In turn, Gartner predicts that by 2023 more than 50% of new sales and implementations of firewalls will be implemented using SD-WAN technologies.

SD-WAN Infrastructure Market Growth by 83.3% to $833 Million

On August 8, 2018, analysts at International Data Corporation (IDC) published the results of a study of the infrastructure market used to launch and operate software-defined wide area networks ( SD-WAN). Sales of relevant equipment and software on a global scale in 2017 jumped 83.3% compared to the previous year and reached $833 million.

The SD-WAN software and hardware market added 83%. Cisco and VMware lead the way

According to experts, the volume of the market in question will reach $4.5 billion by 2022, and the annual growth rate will be measured at about 40.4%.

The study notes that Cisco occupies a large part of the SD-WAN software and hardware solutions market due to its extensive portfolio of routers, which are often used in projects, as well as the acquisition of Meraki and Viptela.

Analysts gave the second place in revenue in the SD-WAN infrastructure market to VMware, which was partly facilitated by the takeover of VMware VeloCloudNetworks. The group of leaders is as follows (shares for 2017 are not named):

• Cisco;
• VMware;
• Silver Peak;
• Riverbed Technology;
• Aryaka;
• Nokia;
• Versa Networks.

The researchers say competition in the technology market to deploy software-defined global networks is escalating. At the same time, manufacturers of traditional network equipment willingly practice mergers and acquisitions transactions in order to supplement their offers or strengthen their position in this rapidly growing market.

Analyst Rohit Mehra that the emergence of SD-WAN has led to one of the fastest transformations in the network market in years. Under these conditions, manufacturers quickly make adjustments to their range of products for routing and optimizing WAN networks in order to squeeze startups demonstrating a rapid rise, he said.^[6]

"Zero trust" - the basis of SD-WAN security

On February 10, 2017, companies had the opportunity to suspend the process of increasing the level of heterogeneity of network infrastructure and make them safer - technologies allow them to switch to creating software-defined networks and organizing security systems on the principles of "zero trust."

With the development of the corporate network, a significant number of different segments are growing in it, some of which are created under the influence of short-term factors, sometimes to the detriment of the general security concept. The network infrastructure is becoming less homogeneous. Supporting such infrastructures requires more and more time and finances.

Representation of the state of systems before and after using the concept of "zero trust," (2017)

The transition to the organization of software-defined networks and the formation of security systems on the principles of "zero trust" will allow companies to reduce the influence of these factors, simplify the manageability of the network, increasing its security^[7]

Network security with "zero trust"

The "zero trust" concept is a security model developed by the National Institute of Standards and Technology USA (NIST). She was born in February 2013, according to a presidential decree. Barack H. Obama NIST was instructed to collect complete information about the cyber threats faced by government organizations and commercial companies. As a result of the work carried out, a list of recommendations appeared entitled "Zero trust model," recommended for use in creating the cyber security US national system.

The prepared rules determined the philosophy of ensuring cybersecurity. According to these recommendations, the principle of "zero trust":

• applies to any business companies and government entities;
• can be applied to the products of any vendor or technology;
• replaces the principles taken into account when distributing data, namely: the transfer of any data makes public, but prescribes the placement of protected content;
• does not entail a revision of the generally recognized list of civil liberties.

The implementation of the "zero trust" model, applied to networks, led to a change in the concept of network security. According to NIST, the previous principle of full trust in data packets received from a trusted source was subject to revision.

The introduction of "rules of mistrust" led to a revision of the concept of network security. The previous approach provided for the division of the network along its perimeter into an external unsafe segment and an internal trust environment. In the trust part, traffic was regulated by the access rights that the client received in accordance with the role assigned to him in the security policy.

The concept proposes to abandon the division of networks into trusted and open segments. The entire network is "devoid of complete trust." All network traffic is classified as unsafe and verifiable.

The enterprise network model, built on the principles of "zero trust," offered a number of possibilities: it became the basis for creating security mechanisms when working with private and public clouds, when using a virtualized infrastructure and actively using software management tools for network configurations.

As a result of these changes, the approach to considering the network infrastructure has changed qualitatively. Instead of combining the previous numerous "island networks" with horizontal connections and chaotic placement of IT infrastructure protection tools, it became possible to organize a territorial network as a single, safe environment with continuous security control and flexible management of it with simple tools.

IDC predicts an increase in the number of installed software-defined territorial networks (SD-WANs) in the medium term. The total world income from their operation will exceed $6 billion in 2020, the total average annual growth rate in the next five years will exceed 90%.

SD-WANs improve network security over traditional territorial networks. This is due to the improvement of the access policy selection mechanism in the SD-WAN.

Using SD-WAN simplifies branch office connectivity, which improves overall network security. It becomes possible to implement end-to-end enciphering on any sections of the network, both within segments of the local part of the network, and when interacting with clouds. The use of the protocol (IPSec 256-bit) helps to reduce threats.

Implementing SD-WAN enables software-defined firewalls to be deployed to endpoints. With their help, you can inspect packets while maintaining the status (stateful firewalls), creating additional protection against intrusion and checking traffic for correctness.

You can also reduce service costs. Secure routing of traffic on the public Internet helps SD-WAN eliminate the need to install expensive private networks with multi-protocol switching (MPLS).

SD-WAN provides the ability to refine the throughput and quickly rebuild the routing taking into account the time of traffic passing through different segments. This is possible both when working with the public Internet and when using MPLS sites.

Based on SD-WAN, it is possible to constantly monitor service availability, delay level, network performance. When the control parameters are lowered, traffic can be routed automatically by passing it through the areas with the best effective characteristics. As a result, network performance is improved, and better network support is provided for applications.

From a security perspective, implementing SD-WAN helps develop hybrid networks. On their basis, you can implement secure data transfer over any territorial networks and the open Internet without being tightly tied to the equipment or technologies of a particular vendor.

2015: In 2019, 30% of organizations will implement SD-WAN products

SD-WAN solutions streamline and simplify the implementation of hybrid WANs, giving IT departments the ability to quickly and securely, more flexibly, and easily access applications in a data center or public cloud. The SD-WAN market is projected to grow significantly in the next few years. According to Gartner, by the end of 2019, 30% of organizations will be using SD-WAN products across all affiliates - at today's rate of 1% (Gartner, Inc., Predictions 2016: Enterprise Networks and Network Services, Bjarne Munch, Dec. 1, 2015)

In addition, the number of mobile versions of applications is increasing, and they become available on various devices outside the office. This is a very important trend, given the fact that in 2018 portable equipment will account for half of the entire user base. All this suggests that networks have become a strategically important asset, and administrators should anticipate and plan alternative methods for connecting mobile devices in corporate WANs.

Companies' communications demands have outgrown the ability of private MPLS WAN services to provide communications between remote offices and data centers. The current network architecture is more than ten years old, and therefore it does not correspond to today's challenges: an increase in the number of connected devices, mobility, and increased security needs. The software-defined WAN is designed not only for current, but also for the future needs of the organization. SD-WAN technology enables hybrid networks that integrate access technologies such as Internet services, dynamic traffic routing, and real-time connection configuration based on available bandwidth or selected criteria. In addition, it can reduce the total cost of bandwidth.

In 2015, the emerging SDWAN market was valued at almost $225 million. According to IDC forecasts, in 2016 this market will grow by 165% and reach a value of $595 million. Then in 2017 - by 129%, in 2018 - by another 87% and will reach a value of 2.6 billion. IDC estimates that until 2020, the CAGR for SD-WAN will be 93% and will be estimated at more than $6 billion.

2010-2014

The concept of SD-WAN as such began to take shape from the beginning of the 2010s - with the development of virtualization technologies, when ideas such as implementing the functions of managing network infrastructures and configuring them programmatically originated, as well as virtualization of physical network nodes in a single environment for each specific infrastructure, which made it possible not only to simplify and optimize the management and configuration processes, but also make more efficient and rational use of available computing resources.

In 2012, several SD-WAN startups began to operate in the United States, and in 2014 the first customers appeared using their IT products for their networks. Two years later, the concept was believed by the largest network developers, including Cisco, HP, Riverbed and others^[8].