What are some big sites that are using Amazon EC2

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I'm looking for examples of large websites that are hosted on Amazon EC2/S3/Cloudfront/etc.

I worked at a company where we ran a site that did 500k unique visitors per month on EC2 running 10 instances but that's still relatively small potatoes compared to some larger sites. I know smug mug and foursquare are also hosted on EC2. What other large websites are on EC2?

Answer 1

How large is 'large'? I know that heroku runs on EC2, and they do a pretty large amount of traffic.

Answer 2

In the financial world Nasdaq OMX is a good example but virtually every bank uses EC2 for computational needs (not as a main system but highly used by both banks and hedge funds to run simulations).

Answer 3

Instagram uses Amazon... at least their images are hosted on S3. Check out this link:

http://distillery.s3.amazonaws.com/media/2011/09/17/42923def0eb141fc8bb4ab0c963d0dbc_6.jpg

Also, I'm pretty sure Reddit moved away from Amazon Cloud after the most recent outage.

Here's a link to Amazon case studies that details some of their larger clients:

http://aws.amazon.com/solutions/case-studies/

Answer 4

Reddit uses EC2

Answer 5

Netflix, DropBox, Zynga (maker of Farmville) are pretty big users of EC2