To estimate Google Maps' bandwidth, we need to consider the data transferred per user session and the total number of active users. A typical Google Maps session involves loading map tiles, searching for locations, and receiving directions. Each of these actions consumes data. Map tiles, especially at higher zoom levels, are data-intensive. Search queries and results are less so, but still contribute. Directions involve routing data and potentially real-time traffic updates. We can estimate the average data per user session by summing the data for these components. Then, multiplying this by the total number of concurrent users in a peak period (e.g., a holiday weekend in a major region like the USA) will give us the total bandwidth requirement at Google's server entry points. For instance, if an average session uses 5MB and there are 10 million concurrent users, the peak bandwidth would be around 50 TB/s.
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