On-Demand Instances let you pay for compute capacity by the hour
with no long-term commitments. This frees you from the costs and
complexities of planning, purchasing, and maintaining hardware and
transforms what are commonly large fixed costs into much smaller
Pricing is per instance-hour consumed for each instance, from the
time an instance is launched until it is terminated or stopped. Each partial
instance-hour consumed will be billed as a full hour.
Reserved Instances give you the option to make a low, one-time payment for each
instance you want to reserve and in turn receive a significant discount on the hourly
charge for that instance. There are three Reserved Instance types (Light, Medium,
and Heavy Utilization Reserved Instances) that enable you to balance the amount
you pay upfront with your effective hourly price.
Reserved Instances can be purchased directly from AWS for 1 or 3 year terms. Using
the Reserved Instance Marketplace, you have the flexibility to purchase Reserved
Instances from AWS Reserved Instance Marketplace Sellers for terms ranging between
1 month to 36 months (depending on available selection). In either case, the one-time
fee per instance is non-refundable. If your needs change, you can also request to move your Reserved Instance to another Availability Zone within the same region, change its Network Platform, or, for Linux/UNIX and Windows RIs, modify the instance type of your reservation to another type in the same instance family at no additional cost.
Light and Medium Utilization Reserved Instances also are billed by the instance-hour
for the time that instances are in a running state; if you do not run the instance
in an hour, there is zero usage charge. Partial instance-hours consumed are billed
as full hours. Heavy Utilization Reserved Instances are billed for every hour during
the entire Reserved Instance term (which means you’re charged the hourly fee regardless
of whether any usage has occurred during an hour).
If Microsoft or Red Hat chooses to increase the license fees that it charges for
Windows or Red Hat Enterprise Linux, we may correspondingly increase the per-hour
usage rate for previously purchased Reserved Instances with Windows or Red Hat Enterprise
Linux. The initial one-time payment for a Reserved Instance will be unaffected in
this situation. Any such changes for Windows would be made between Dec 1 – Jan 31,
and with at least 30 days’ notice. Any such changes for Red Hat Enterprise Linux
would be made at least 30 days’ notice. If the per-hour usage rate does increase,
you may continue to use your Reserved Instance with Windows or Red Hat Enterprise
Linux with the new per-hour usage rate, convert your Reserved Instance with Windows
or Red Hat Enterprise Linux to a Reserved Instance with Linux/UNIX, or request a
pro rata refund of the upfront fee you paid for the Reserved Instance with Windows
or Red Hat Enterprise Linux.
Reserved Instances are available for Linux/UNIX, Windows, Red Hat Enterprise Linux,
and SUSE Linux Enterprise operating systems. You can also optionally reserve instances
in Amazon VPC at the same prices as shown above.
Click here to learn more about Reserved Instances.
Reserved Instance Volume Discounts
When you have purchased a sufficient number of Reserved Instances in an AWS Region,
you will automatically receive discounts on your upfront fees and usage fees for
future purchases of Reserved Instances in that AWS Region. Reserved Instance Tiers
are determined based on the total list price (non-discounted price) of upfront fees
for the active Reserved Instances you have per AWS Region. It is important to note
that Reserved Instance Tiers do not apply to Reserved Instances purchased from the
Reserved Instance Marketplace. A complete list of the Reserved Instance Tiers is
For example, as soon as you have active Reserved Instances with total list price
of upfront fees totaling more than $250,000 in a single AWS Region, you will automatically
receive a 10% discount on both upfront and hourly fees for all future Reserved Instance
purchases in that AWS Region, and those discounts will continue to apply to new
Reserved Instances as long as you continue to qualify for the discount tier.
To illustrate, let's assume you currently have $200,000 worth of active Reserved
Instances in us-east-1. You purchase 75 Reserved Instances at $1000 each. That's
a total of $75,000. The first $50,000 of this purchase would be discounted at 0
percent. The remaining $25,000 of your purchase will be discounted by 10 percent,
so you will only be charged $22,500 for it, and you will pay discounted hourly fees
on those Reserved Instances.
Spot Instances enable you to bid for unused Amazon EC2 capacity.
Instances are charged the Spot Price, which is set by Amazon EC2 and
fluctuates periodically depending on the supply of and demand for Spot
Instance capacity. To use Spot Instances, you place a Spot Instance
request, specifying the instance type, the Availability Zone desired, the number
of Spot Instances you want to run, and the maximum price you are
willing to pay per instance hour. To determine how that maximum price
compares to past Spot Prices, the Spot Price history is available via
the Amazon EC2 API and the AWS Management Console. If your maximum
price bid exceeds the current Spot Price, your request is fulfilled
and your instances will run until either you choose to terminate them
or the Spot Price increases above your maximum price (whichever is
If you would like to go straight to a view of the latest Spot Instance pricing:
Log in to the AWS Management Console, then click the “Amazon EC2” tab.
Click on “Spot Requests” in the navigation pane on the left.
Click on “Pricing History” to open a view of pricing selectable by instance type.
The pricing below is based on data transferred "in" to and
"out" of Amazon EC2.
Rate tiers take into account your aggregate usage for Data Transfer Out to the Internet across Amazon EC2, Amazon S3, Amazon Glacier, Amazon RDS, Amazon SimpleDB, Amazon SQS, Amazon SNS, Amazon DynamoDB, and AWS Storage Gateway.
Data transferred "in" to and "out" of Amazon Elastic Load Balancing is priced equivalent to Amazon EC2, except that Data Transfer OUT from Amazon Elastic Load Balancing in EC2 to another AWS Region or Amazon CloudFront is priced at "Internet" rates. Data transferred OUT from Amazon Elastic Load Balancing in Amazon VPC to another AWS Region or Amazon CloudFront is priced at Inter-region rates.
EBS-Optimized instances enable Amazon EC2 instances to fully utilize the IOPS provisioned on an EBS volume. EBS-Optimized instances deliver dedicated throughput between Amazon EC2 and Amazon EBS, with options between 500 Mbps and 1000 Mbps depending on the instance type used. When attached to EBS-Optimized instances, Provisioned IOPS volumes are designed to deliver within 10% of their provisioned performance 99.9% of the time. Pricing for supported instance types is listed below.
The hourly price for EBS-Optimized instances is in addition to the hourly usage fee for supported instance types.
Amazon Elastic Block Store
Provisioned IOPS is charged by the amount you provision in IOPS (input/output operations per second) X the percentage of days you provision for the month. For example, if you provision a volume with 1000 IOPS, and keep this volume for 15 days in a 30 day month, then in the Virginia Region, you would be charged $50 for the IOPS that you provision ($0.10 per provisioned IOPS-Month * 1000 IOPS Provisioned * 15 days/30).
Amazon EBS currently supports up to 4000 IOPS per Provisioned IOPS volume. For a given allocation of resources, the IOPS rate you get from your Provisioned IOPS volume depends on the I/O size of your applications’ reads and writes. Provisioned IOPS volumes process your applications’ reads and writes in I/O sizes of 16KB or less. Every increase in I/O size above 16KB will linearly increase the resources you need to achieve the same IOPS rate. For example, if you have provisioned a volume with 2000 IOPS, that means that it can handle 2000 16KB writes per second, or 1000 32KB writes per second, or 500 64KB writes per second, and so on. You can use Amazon CloudWatch to monitor your throughput and I/O sizes.
Elastic IP Addresses
You can have one Elastic IP (EIP) address associated with a running instance at no charge. If you associate additional EIPs with that instance, you will be charged for each additional EIP associated with that instance per hour on a pro rata basis. Additional EIPs are only available in Amazon VPC.
To ensure efficient use of Elastic IP addresses, we impose a small hourly charge when these IP addresses are not associated with a running instance or when they are associated with a stopped instance or unattached network interface.
Detailed Monitoring for Amazon EC2 is charged at standard Amazon CloudWatch rates of $0.50 per metric per month. Each instance includes seven metrics for total charges of $3.50 per month. Partial months are charged on an hourly pro rata basis, at approximately $0.005/instance-hour.
Note: This new pricing for Detailed Monitoring (representing a 68% decrease from the current price) takes effect starting June 1, 2011. Prior to that, the price remains $0.015 per instance-hour or partial hour. Pricing for Amazon CloudWatch Custom Metrics takes effect starting June 1, 2011. Custom metrics (that you send and Amazon CloudWatch monitors) before that time are free of charge.
Auto Scaling is enabled by Amazon CloudWatch and carries no
additional fees. Each instance launched by Auto Scaling is
automatically enabled for monitoring and the
applicable Amazon Cloudwatch charges will
Elastic Load Balancing
AWS GovCloud Region
AWS GovCloud is an AWS Region designed to allow U.S. government agencies and contractors to move more sensitive workloads into the cloud by addressing their specific regulatory and compliance requirements. For pricing and more information on the new AWS GovCloud Region, please visit the AWS GovCloud Web Page.
* Your usage for the free tier is calculated each month across all regions except the AWS GovCloud Region, and automatically applied to your bill – unused monthly usage will not roll over. Does not include Amazon EC2 running IBM, or the AWS GovCloud Region. See offer terms for more details and other restrictions. ** As part of AWS’s Free Usage Tier, new AWS customers will receive free 15 GB of data transfer out each month aggregated across all AWS services for one year except in the AWS GovCloud Region. *** Rate tiers take into account your aggregate Data Transfer Out usage across Amazon EC2, Amazon EBS, Amazon S3, Amazon Glacier, Amazon RDS, Amazon SimpleDB, Amazon SQS, Amazon SNS, AWS Storage Gateway, Amazon DynamoDB and Amazon VPC.