I came accross this forum, in search for an answer to new, never faced task. Task: Find out how many visitors maximum can visit a website at any given time. I need to avoid a situation where server is unable to serve more visitors due to heave traffic load. To ensure the website loads instantly, it's going to be designed as a single scroling down page, with one css file, and probably few images. Much like Hyundai did for their new car (hyundai-veloster.eu). Apart from server load, I also consider whether use Amazon S3 or Google Sites for hosting the website. Can you suggest or advise what route would you take (or already have taken) when launching a single page website for new product.
There is plenty of V&P testing software on the market that will do this. Its a while since I retired from the day job so my product knowledge is getting stale so I would hesitate to make recommendations. You should be able to buy the software or buy time on the provider's own servers.