SHRUDE: Why do we I always see the "media5.wgt.com"
http://www.media5corp.com/en/
Basically it's Media5's job to optimize WGT's content delivery. WGT provides content to Media5 and they distribute it. Our company uses Scene 7, which is a company run by Adobe.
Now I could be wrong, Media5 just might be a proxy of sorts that sends your request to the actual Content Delivery service. They could simply be an extra layer of security or traffic optimization.
If Media5 is the content service, then that's the server that interrupts your request and does its own work behind the scenes to get you what you need as quickly as possible.
If you use Firefox or Chrome, and you want to see what's really going on behind the scenes. Hit the F12 key or find your Developer's console, the network tab can be an interesting watch.
Just keep in mind, you'll never see everything. There's lots of stuff that goes on "server-side" that you'll never see. That's all the communication and stuff that happens behind WGT and their associated server network. Backend servers talking to each other, before your request can be satisfied, for example.
It's a big world out there. =)