Amazon Web Services is gaining ground as a hosting provider, with 4,921 of the 100,000 most visited websites running on it, according to a new report from hosting analysis company Hostcabi.

While developer favorite DigitalOcean has been growing fast in the hosting business, Amazon is clearly a top provider for the most popular of websites on the Internet.

Amazon’s count is up from around 4,100 websites as of October, when Hostcabi last issued a report. And it was far from the top hosting provider in Hostcabi’s November 2012 report.

The growth of Amazon in hosting comes as big cloud providers like IBM’s SoftLayer, Google, and Rackspace saw decreases in hosting the top 100,000 websites, relative to the October report from Hostcabi.

Decreases also came to more traditional hosting providers like GoDaddy, OVH, Media Temple (which GoDaddy bought last year), and 1&1.

But Amazon’s hosting growth rings true when you think about how much Amazon has ended up dominating the broad cloud-computing space. Now that trend appears to be having an effect on more hosting providers.

And as Amazon takes on even more business, Amazon can enjoy better efficiencies and gradually lower prices even further. So Amazon’s customers have that to look forward to.

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