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What is Amazon Aws? Is it hosting service provided by Amazon? Is Twitpic hosted by AmazonAws? How much it cost (I couldnt find on their site)

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up vote 5 down vote accepted

AWS is Amazon Web Services. It's the umbrella term that covers a range of (separately priced) web services from Amazon. The best known services are

  • S3 Simple Storage Service, Amazon's "cloud file system" if you like.
  • EC2 Elastic Compute Cloud, their scalable web server service for running your own web apps.
  • SimpleDB, a scalable and simple (non-relational) database system.

There's quite a bit to AWS -- it's not a single product but a quite large suite of services. Costs vary depending on the service and your usage of it. Twitter has indeed used S3 in the past (not sure if they still do).

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