With Microsoft rolling out its Azure cloud computing platform, Amazon.com is cutting prices again on its cloud services and adding some new incentives. Amazon Web Services evangelist Jeff Barr, in a blog post, said the company is reducing the cost of its S3 storage service in the EU region by more than 15 percent, adding new storage options for big customers, and waiving inbound data transfer fees for all cloud computing services through June 2010.

Here's what Barr writes about the new storage options:

In addition, we have reduced the price of our 500 TB tier and have added two new storage tiers across all Amazon S3 Regions for our largest customers. S3 storage in excess of 1 PB per month is billed at $0.08 per GB per month in the US Standard and EU (Ireland) Regions and $.095 in the Northern California Region. S3 storage in excess of 5 PB per month is billed at $0.055 per GB per month in the US Standard and EU (Ireland) Regions and $0.070 per GB per month in the Northern California Region.

Amazon in October also slashed prices on its core EC2 cloud computing service. It will be interesting to see what else Amazon does to counter Azure and other cloud rivals.

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