There’s no question that the enterprise wide area network (WAN) market is in a state of flux.
We’ve seen multiple disruptions in the way multinational corporations construct WANs: a move toward cloud computing, migration of the data center away from corporate premises, and, especially, the introduction of SD-WAN.
To help carriers, vendors, and enterprise IT infrastructure teams understand how these changes will affect the business of telecom, we’ve created the new WAN Market Size Report.
TeleGeography’s research relies on real metrics and data—not analyst opinion. In this new market size report we present a data-driven, granular view of the market opportunity for underlay of the corporate WAN based on our survey data. For an objectively-defined enterprise market we used the Global 5000 database (G5000), which is made up of the 5,000 largest companies in the world by revenue, whether publicly or privately held.
Here’s a deeper look at how this new report came together and some of our top-level observations.
Bottom-Up Market Size Model
We approached this market sizing effort with a bottom-up methodology—not a top-down one.
The simplest enterprise telecom market sizing method—and for high-level numbers, the most accurate—would go through 10-K forms and annual reports from global telecommunications companies for enterprise market earnings. This top-down approach can only be as granular as the vendor reporting.
Given some of the data we already had on hand, we instead broke out market sizes by product segment and geography. This allowed us the chance to understand not just the global opportunity in enterprise telecom, but also:
- limit the analysis to larger enterprises with a clear definition of employee counts and revenue;
- focus directly on the components of the WAN (not ancillary enterprise services such as mobile plans and IT outsourcing); and
- track how individual products and services like MPLS IP-VPN and DIA contribute to the total market size.
We defined the modern wide area network by core components that make up layers one, two, and three of the OSI stack. We did this because WANs are thought of as the primary data service from telecom carriers that serve the enterprise market.
These core components include:
- Port Services: MPLS VPN, and dedicated internet access (DIA)
- Access Services: leased line and Ethernet circuits connecting customers premises to carrier PoPs
- Business Broadband: business grade internet that falls short of DIA-level SLAs and is usually contended and often asymmetrical
- SD-WAN Overlay Charges: based on total site encrypted throughput amounts
We didn’t include private line services in this run of the model, as they’re still somewhat rare among many types of enterprises. And, more importantly, we lacked good survey data on private line usage and bandwidth amounts. We hope to include point-to-point in future updates, as it’s a growing segment of the enterprise WAN.
The Global WAN Market Size by Product
After running our model based on the prominence and pricing of these products across the global networks of the G5000 companies, we found the median model run indicated a global value of $75.9 billion USD.
We split the total median market of $75.9 billion into the components I listed above and found that:
- In 2020, MPLS represents a plurality of the market size at about two-fifths of total revenue.
- MPLS and DIA together as “port services” represent about three-fifths.
- Local access is also significant, at 38%.
- Broadband, at its much lower prices, is insignificant.
- SD-WAN is still somewhat nascent at 2%, but it will likely grow significantly as a part of this market over the next several years.
Median Global Market Size by Product, Millions USD
In the report we drill down further, breaking out trends by region and separating local access connected to MPLS or DIA.
We did this because DIA ports do not always require an additional local access line, while MPLS generally does, and because MPLS port sizes (and thus access lines) trend a bit smaller than DIA.
In this first run we didn’t include a forecast model; we plan to release one by Q1 2021.
Those familiar with current WAN trends can look at this product distribution and understand that big changes are coming. The vast majority of the market comes from MPLS and attendant access lines. As those become less prominent due to the capabilities of SD-WAN, the size of the total market may shrink.
Of course, those familiar with current WAN trends can look at this product distribution and understand that big changes are coming. The vast majority of the market comes from MPLS and attendant access lines. As those become less prominent due to the capabilities of SD-WAN, the size of the total market may shrink.
While SD-WAN, DIA, and broadband numbers will increase significantly as MPLS and access contributions fall, it’s in question whether they’ll grow at a pace that exceeds MPLS losses or even replaces them.
This will likely be exacerbated by the fact that–even after the pandemic subsides–distributed work may be here to stay, at least in part. If fewer workers are located in corporate premises, bandwidth demand at those locations may contract and the raw number of sites included the typical WAN may go down. This might shift some of the cost of the WAN toward the employee’s residential broadband connections outside the WAN market.
Greg is Senior Manager, Enterprise Research at TeleGeography. He's spent the last decade and a half at TeleGeography developing many of our pricing products and reports about enterprise networks. He is a frequent speaker at conferences about corporate wide area networks and enterprise telecom services. He also hosts our podcast, TeleGeography Explains the Internet.