Amazon has a range of cloud computing products. Think databases, servers, file storage , and more, all located in data centers around the world. For some PoodLL recordings we need to use a Red5 server. Since installing and running a Red5 server is beyond the skills and resources of most Moodlers, I have a public one set up on a server hosted by Amazon in their Tokyo data center. That is called tokyo.poodll.com.
But there are a few happy qualifiers to all of this for you. In order of happiness ...
i) You don't need a Red5 server for short audio recordings, or for any recordings from mobile devices.
There are 2 audio recorders in Moodle, the PoodLL Audio Recorder and the PoodLL MP3 Recorder. Both can produce MP3 files, despite the strange naming. The PoodLL MP3 recorder can skip the whole Red5 connection. But its only good for up to 3 minutes, preferably less. Mobile devices use their native recording ability and just upload to Moodle directly. So they also bypass Red5. But they are a bit more clunky to use in this context.
ii) You can just install your own Red5 server. Lots of people do that. Its a bit techy. But if thats a problem, you can always ask me to do it($ alert). People do that too.
iii) The recordings are only on Amazon for 30 minutes to an hour. They are actually copied straight back to Moodle after recording. And then the files on Amazon are deleted every 30 minutes or so, if the file is 30 minutes old.
Thats the full story. I hope it helps.