In terms of bitrate, it might support as much as 5gbs, which is a Java limitation. So if your streams average 1mbs, that is ~5000 playback clients. Of course, again, you would have to test your actual server/network using the load test tool, or monitoring utilization in production. You must be
properly tuned. And to achieve maximum levels you may have to tune your server and network in other ways outside Wowza.