An edge location is a physical data center within a CDN's network positioned close to end users, caching content so it doesn't have to travel back to your origin server every time.
Why "Edge"
The term reflects that these locations sit at the edge of the network, closest to visitors, as opposed to your origin server which might be a single, centralized location.
Why More Locations Help
A CDN with edge locations across many regions serves visitors from nearby infrastructure regardless of where they're browsing from, meaningfully reducing latency for a geographically spread audience.
What Gets Served From the Edge
Static content (images, CSS, JavaScript) is typically cached and served directly from edge locations, while dynamic content generally still needs to reach your origin server.
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