It's the IATA code for Portland International Airport. Many datacenters use IATA codes for the nearest airport to give a rough approximation of the location. So the PDX datacenter is the one closest to the PDX airport in or around Portland.
Cloudflare's Portland datacenter. Most clouds/CDNs name their DC's after the airport code of the city they are in or are close to. Internally they would be listed as PDX, ORD, LAX, etc.
It's the IATA code for Portland International Airport. Many datacenters use IATA codes for the nearest airport to give a rough approximation of the location. So the PDX datacenter is the one closest to the PDX airport in or around Portland.
Cloudflare's Portland datacenter. Most clouds/CDNs name their DC's after the airport code of the city they are in or are close to. Internally they would be listed as PDX, ORD, LAX, etc.
I assume shorthand for a datacenter in Portland. Labeling data centers by their cities airport code is something I see a lot.
Portland Data Center I believe