So, how large is the global enterprise WAN market? We ran several versions of our model to account for uncertainty in our assumptions and data. The primary model we will focus this analysis on is the "median-median” model. This model combines the median site count based on our assumptions about the distribution of site counts among all global enterprises, and the calculated median price across all cities within a given country for each product and port size in the model. The other versions of the model we ran were based on including lower and higher numbers of potential sites, and the low and Range of Total Market Sizes (USD Billions, 2025) estimate of the global telecom market being worth about $2 trillion, given that enterprise is just one segment, leaving out all consumer, small business, wholesale, wireless, and other telecom services. Of course, there will always be uncertainty around these numbers, which is why we have presented results from various model runs. We doubt very much that our high price model paints a realistic picture of the market, so the $1.5 trillion value is unlikely to match reality, but other combinations of different site counts and price ranges certainly seem like plausible alternatives. Our primary goal with this model, however, isn't just to come up with a singular global market size, but rather to compare contributions of the key WAN products and geographies. We look at revenue for MPLS, DIA, business broadband, local access, and SD-WAN to more closely examine revenue sources both by product and subregion or country. Globally, we see massive differences between the revenue contributions of these WAN products and geographies.
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