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Amazon AWS : ウィキペディア英語版
Amazon Web Services

Amazon Web Services (AWS), is a collection of remote computing services, also called web services, that make up a cloud-computing platform offered by Amazon.com. These services operate from 11 geographical regions across the world. The most central and well-known of these services arguably include Amazon Elastic Compute Cloud, also known as "EC2", and Amazon Simple Storage Service, also known as "S3". Amazon markets AWS as a service to provide large computing capacity more quickly and more cheaply than a client company building an actual physical server farm.〔

== Architecture ==

AWS is located in 11 geographical "regions": US East (Northern Virginia), where the majority of AWS servers are based,〔(Estimate: Amazon Cloud Backed by 450,000 Servers )〕 US West (northern California), US West (Oregon), Brazil (São Paulo), Europe (Ireland and Germany), Southeast Asia (Singapore), East Asia (Tokyo and Beijing) and Australia (Sydney). There is also a "GovCloud", based in the Northwestern United States, provided for U.S. government customers, complementing existing government agencies already using the US East Region.〔(AWS GovCloud (US) Region FAQs )〕 Each Region is wholly contained within a single country and all of its data and services stay within the designated Region.
Each Region has multiple "Availability Zones", which are distinct data centers providing AWS services. Availability Zones are isolated from each other to prevent outages from spreading between Zones. Several services operate across Availability Zones (e.g., S3, DynamoDB) while others can be configured to replicate across Zones to spread demand and avoid downtime from failures. Amazon web services hold 1.79% market share.〔(【引用サイトリンク】url=http://hostadvice.com/marketshare/ )〕 As of December 2014, Amazon Web Services operated an estimated 1.4 Million servers across 28 availability zones.〔(【引用サイトリンク】title=Just how big is Amazon’s AWS business? (hint: it’s absolutely massive) )
With respect to power provisioning for centers in the regions, AWS stated in 2014 a commitment to achieve 100% renewable energy usage. As part of this effort in the United States, AWS commissioned with Community Energy of Virginia a solar farm coming online in 2016 to support the US East region. Further, as of 2015, AWS is working with Tesla Motors to apply battery storage technology to address some power needs in the US West (Northern California) region.〔

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Amazon Web Services」の詳細全文を読む



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