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AWS Billing and Cost Management
User Guide (Version 2.0)

Using Preconfigured Views

Cost Explorer provides eight preconfigured views designed to give you at-a-glance visibility into your costs and Amazon EC2 usage. You can use these views to quickly identify unusual costs, and then you can choose Customize View to investigate in more detail.

The Cost Explorer preconfigured views display charts based on fixed filter settings. They are intended to provide quick access to information that is most commonly useful to an organization. All the preconfigured views display a chart. Beneath the chart, the page shows a data table that displays the cost figures that were used to create the chart. You can also download a CSV report that contains the line items that are used to generate the views.

Preconfigured views are available for monthly and daily time ranges. For Consolidated Billing customers, a view by linked accounts option is available in a monthly time-range format. You access the preconfigured reports through the Billing and Cost Management console.

For more information about how the chart displays services and how the data table displays cost figures, see Reading the Cost Explorer Chart and Reading the Cost Explorer Data Table, respectively.

To open the preconfigured views

  1. Sign in to the AWS Management Console and open the Billing and Cost Management console at https://console.aws.amazon.com/billing/home#/.

  2. In the navigation pane, choose Cost Explorer.

  3. On theCost Explorer page, choose Launch Cost Explorer.

    Note

    Cost Explorer is available in any AWS account for no cost.

  4. For the report drop-down list, choose the view that you want:

In all the preconfigured views, a data table below the chart displays the actual figures that were used to generate the chart.

Note

Charges for your current billing period shown on these reports are estimated. Estimated charges shown on this page, or shown on any notifications that we send to you, may differ from your actual charges for this statement period. This is because estimated charges presented on this page do not include usage charges accrued during this statement period after the date you view this page. One-time fees and subscription charges are assessed separately from usage and recurring charges, on the date that they occur.

Cost Explorer Cost and Usage Views

Cost Explorer cost and usage views show how you use services, and how your costs are distributed by service.

Daily Spend View

Daily Spend View displays your total costs for each of the last 30 days.

Monthly Spend by Service View

Monthly Spend by Service View displays the distribution of an account's costs by AWS service for the previous 90 days, listed by month.

Monthly Spend by Linked Account View

Monthly Spend by Linked Account View displays how your costs were distributed among the linked accounts in a Consolidated Billing account family.

Monthly EC2 Running Hours Costs and Usage

Monthly EC2 Running Hours Costs and Usage displays your Amazon EC2 running hour costs for the last three calendar months, along with your usage hours. You can use this view to track how many Amazon EC2 usage hours you've used, along with your accumulated Amazon EC2 costs.

The Monthly EC2 Running Hours Costs and Usage view shows two solid bar charts. Your Amazon EC2 service costs are shown in the first chart, and your Amazon EC2 usage hours are shown in the second chart.

On the first day of each billing cycle, you are billed the full amount of the recurring monthly fee of an RI. This causes a large spike in the daily view graph on the first day of the month. If you modify an RI during the month, the prorated RI fee amount for the remaining days of the month is subtracted from that first transaction and added as a new transaction on the day of the modification. This reduces the size of the original spike, and creates a new spike for the day that you modify the RI.

For example, suppose Susan has one RI with a monthly fee of $93. On December 1, 2016, Susan sees a line for $93 dollars for her RI EC2 costs. If she modifies this RI at 12 AM on December 15th, $45 dollars of the initial $93 continue to be dated to December 1st and still show as a spike on the first day of the month. The remaining $48 dollars are assigned to December 15th.

Note

Within a Consolidated Billing family, these recurring monthly fees are billed to the linked account that initially purchases the RI. All running instances that receive discount benefits from the RI show up as $0. You can't tag these monthly fees.

Cost Explorer Reserved Instance Views

Cost Explorer provides two types of Reserved Instance views: the Reserved Instance utilization view and the Reserved Instance coverage view. You can use these views together to see how well your usage patterns are covered by RIs. The utilization view shows how your RI hours are applied to your usage, and the coverage view shows how much of your usage is covered by an RI. This allows you to find cost savings in both directions, by either reducing your RI hours or by purchasing more.

For example, suppose you purchase 720 EC2 RI hours in eu-west-1, and no EC2 RI hours in eu-west-2. You use 400 hours in each region. The utilization view shows that you used only 400 of your 720 hours in eu-west-1, and did not use any RI hours in eu-west-2. The coverage view shows that all 400 of your hours in eu-west-1 were covered by an RI, and none of your hours in eu-west-2 were covered by an RI. This tells you that you purchased too many hours in eu-west-1 and too few hours in eu-west-2.

For more information about each type of report, see Reserved Instance Utilization Views and Reserved Instance Coverage Views.

Reserved Instance Utilization Views

The Reserved Instance utilization views show how much of your RIs you use. This allows you to see if you have over-purchased RIs.

The RI utilization charts display the number of Reserved Instance (RI) hours that your account uses, helping you to understand and monitor your combined usage (utilization) across all of your RIs. The reports allow you to define a utilization threshold, known as a utilization target, and identify RIs that meet your utilization target and RIs that are underutilized. The chart shows RI utilization as the percentage of purchased RI hours that are used by matching instances, rounded to the nearest percentage. For example, for an account that purchases 336 hours and uses 256 hours over the first seven days, the following chart shows that the RI utilization ranges from 60% (on December 6) to 96% (on December 7).

The target utilization is shown on the chart as a dotted line, and in the table below the chart as a colored RI utilization status bar. RIs with a red status bar are RIs with no hours used, RIs with a yellow status bar are below your utilization target, and RIs with a green status bar have met your utilization target. You can change the utilization target in the Display Options section. To remove the utilization target line from the chart, clear the Show target line on chart check box.

You can filter the chart to analyze the purchasing accounts, instance types, and more. The RI reports use a combination of Amazon EC2-specific filters and regular Cost Explorer filters. The Amazon EC2-specific filters are available only for the Daily RI Utilization and Monthly RI Utilization reports, and are not available anywhere else that AWS uses Cost Explorer filters. The following filters are available:

  • Availability Zone – Filter your Amazon EC2 usage by specific Availability Zones (AZs).

  • Instance Type – Filter your Amazon EC2 usage by specific instance types, such as t2.micro or m3.medium.

  • Linked Account – Filter your Amazon EC2 usage by specific linked accounts.

  • Region – Filter your Amazon EC2 usage by specific regions, such as US East (N. Virginia) or Asia Pacific (Singapore).

  • Platform (Amazon EC2-specific) – Filter your Amazon EC2 usage by platform, such as Linux or Windows.

  • Scope (Amazon EC2-specific) – Filter your Amazon EC2 usage to show RIs that are purchased for use in specific AZs or regions.

  • Tenancy (Amazon EC2-specific) – Filter your Amazon EC2 usage by tenancy, such as Dedicated or Default. A Dedicated RI is reserved for a single tenant, while a Default RI might share hardware with another RI.

In addition to changing your utilization target and filtering your RIs with the available filters, you can select a single RI or a group of RIs to show in the chart. To choose a single RI or a selection of RIs to see in the chart, select the check box next to the RIs in the table under the chart.

Reading the RI Utilization View

Cost Explorer shows the combined utilization across all of your RIs in the chart and shows utilization for individual RI subscriptions in the table below the chart. The table also includes the following information for each RI subscription:

  • Account Name – The name of the account that owns the RI subscription.

  • Subscription ID – The unique subscription ID for the RI subscription.

  • Instance Type – The RI instance type, such as t2.micro.

  • RI Utilization – The percentage of purchased RI hours that were used by matching instances.

  • RI Hours Purchased – The number of purchased hours for the RI subscription.

  • RI Hours Used – The number of purchased hours used by matching instances.

  • RI Hours Unused – The number of purchased hours not used by matching instances.

You can use this information to track how many Amazon EC2 usage hours you used (with matching RIs), and how many Amazon EC2 hours you reserved but didn't use. For example, the following screenshot shows six RI subscriptions. The first subscription reserved 35 hours but used only 14 of them, and the last subscription reserved 1,440 hours and used all but five.

Daily RI Utilization

The Monthly RI Utilization displays your Amazon EC2 utilization for the previous three months, on a daily basis. For more information about customizing this chart, see Reserved Instance Utilization Views.

Monthly RI Utilization

The Monthly RI Utilization displays your Amazon EC2 utilization for the previous 12 months, listed by month. For more information about customizing this chart, see Reserved Instance Utilization Views.

Reserved Instance Coverage Views

The Reserved Instance coverage view shows how many of your instance hours are covered by RIs. This allows you to see if you have under-purchased RIs.

The coverage charts allows you to see what percentage of your instance running hours are covered by RIs. You can define a threshold for how much coverage you want from RIs, known as a coverage target, which allows you to see where you can reserve more RIs. For example, for an account that purchases 504 Amazon EC2 RI hours and uses 579 EC2 hours over seven days, the following chart shows that the RI coverage ranges from 100% (on December 17) to 75% (on December 23). The EC2 hours on December 17 are completely covered by RIs, while the EC2 hours on December 23 are only 75% covered by RIs. If this usage pattern continues, this account could purchase more RI hours and reduce its costs.

Note

RI coverage is rounded up to the nearest hour, for each hour or partial hour that your instance is running.

The target coverage is shown on the chart as a dotted line, and the average coverage is shown in the table below the chart as a colored status bar. Instances with a red status bar are instances with no RI coverage, instances with a yellow status bar are below your coverage target, and instances with a green status bar have met your coverage target. You can change the coverage target in the Display Options section. To remove the coverage target line from the chart, clear the Show target line on chart check box.

The RI coverage reports use the Cost Explorer filters instead of the RI Utilization filters.

Reading the RI Coverage View

Cost Explorer shows the combined coverage across all of your instances in the chart and shows coverage for individual instances in the table below the chart. The table also includes the following information for each instance:

  • Instance Type – The instance type, such as t2.micro.

  • Platform – The instance operating system, such as Linux/UNIX.

  • Tenancy – The instance tenancy, such as Default or Dedicated>.

  • Region – The region that the instance is located in.

  • Average coverage – The percentage of running hours that were covered by matching RIs.

  • RI covered hours – The number of running hours that were covered by matching RIs.

  • On-demand hours – The number of running hours that were not covered by matching RIs.

  • Total running hours – The total number of running hours.

You can use this information to track how many hours you use, and how many of those hours are covered by RIs. For example, the following screenshot shows three instances. The first instance has no matching RIs and ran for 75 hours with no RI coverage, and the last two instances ran for 168 and 336 hours, and were completely covered by RIs.

Daily RI Coverage

The Daily RI Coverage chart displays the number of RI hours that your account uses on a daily basis for the last three months. It uses the same filters and options as the cost and usage reports. For more information about customizing this chart, see Daily RI Coverage.

Monthly RI Coverage

The Monthly RI Coverage chart displays your Reserved Instance coverage for the previous 12 months, listed by month. It uses the same filters and options as the cost and usage reports. For more information about customizing this chart, see Daily RI Coverage.