For a project we're working on, we're expecting 1000+ concurrent users (I am discussing 'concurrency' on other thread http://moodle.org/mod/forum/discuss.php?d=196000 ). I reviewed hosting plans from Moodle Partners, but pricing seems a bit on high end. On the other hand, cloud based hosting (e.g. Amazon AWS) seems more affordable and is also flexible in terms of scalability.
Does anyone have experience hosting Moodle on cloud? Which are some of the good providers, and are there any benefits/isues of hosting on cloud vs hosting on VPS/dedicated servers?
I'd appreciate any pointers to start with. If you could share your good/bad experience with any specific cloud provider service, it'd be tremendously helpful.