AWS云服务费用中，数据传输费用很难预估。为了帮助您了解AWS的数据传输成本，这里详细介绍了数据传输费用是如何构建的，如何减少数据传输费用的一些建议，以及如何分析数据传输成本。
尽可能使用价格便宜的区域
某些区域的AWS数据传输成本比其他区域低。美国和加拿大地区通常是最便宜的，而新加坡、印度和南美是最贵的。如果没有必要的商业理由要放在相对贵一些的区域的话，请选择成本效益更高的北美地区。
限制出站流量
减少AWS数据传输成本的最简单方法是减少发送出站数据，从下面的AWS数据传输定价图表可以看出，入站数据是免费的，而出站数据是按照阶梯比例收费的。
使用Cloudfront
CloudFront是专门为减少EC2到互联网传输的费用而设计，比如托管一个向公众提供内容的网站可能产生的费用。CloudFront数据传输按下表收费，在某些区域相比互联网数据传输费用更便宜一些。
保持数据传输在单区域
在AWS服务(如EC2和S3)之间传输数据时，构建应用程序以确保这些传输发生在单个AWS区域内。除此之外，要确保通过私有ip传输数据，而不是公共的或弹性的IPv4/IPv6地址。对于从公有或弹性地址"传入"和"传出"的数据，每个方向均按 0.01 USD/GB 的标准收费。
保持EC2数据传输在一个可用性区域内
在传输数据时，特别是在EC2实例之间以及RDS、Redshift和其他服务实例之间传输数据时，尽量将数据传输保持在相同的可用性区域内通过私有ip传输数据，否则每个方向将收取0.01USD/GB的费用。
使用VPC endpoint
S3 VPC endpoint是一个很好的节约成本的方案，但大多数人都没有使用。在你的VPC中放置一个S3 endpoint可以让任何流量流向S3的内部路径，资费对比如下：
如需进一步协助或服务，请留言，泰岳云业务会提供成本分析工具及专业服务。
Among AWS cloud service costs, data transfer costs are difficult to estimate. To help you understand AWS data transfer costs, here is a detailed explanation of how data transfer costs are structured, some suggestions for reducing data transfer costs, and how to analyze data transfer costs.
Use Cheaper Regions Whenever Possible
AWS data transfer costs are lower in some regions than others. US and Canada regions are typically the cheapest, while Singapore, India, and South America are the most expensive. If there's no necessary business reason to be in a relatively expensive region, choose the more cost-effective North American regions.
Limit Outbound Traffic
The simplest way to reduce AWS data transfer costs is to reduce outbound data sent. From the AWS data transfer pricing chart below, you can see that inbound data is free, while outbound data is charged at tiered rates.
Use CloudFront
CloudFront is specifically designed to reduce EC2-to-internet transfer costs, such as costs that might be incurred by hosting a website that serves content to the public. CloudFront data transfer is charged according to the table below, which is cheaper than internet data transfer costs in some regions.
Keep Data Transfer Within a Single Region
When transferring data between AWS services (such as EC2 and S3), architect your applications to ensure these transfers occur within a single AWS region. Additionally, make sure to transfer data via private IPs rather than public or elastic IPv4/IPv6 addresses. For data "in" and "out" from public or elastic addresses, a standard charge of $0.01/GB applies in each direction.
Keep EC2 Data Transfer Within One Availability Zone
When transferring data, especially between EC2 instances and RDS, Redshift, and other service instances, try to keep data transfer within the same availability zone via private IP. Otherwise, a charge of $0.01/GB will apply in each direction.
Use VPC Endpoints
S3 VPC endpoint is a great cost-saving solution, but most people don't use it. Placing an S3 endpoint in your VPC allows any traffic to flow to S3 via an internal path. The pricing comparison is as follows:
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