GetReservationPurchaseRecommendation - AWS Billing and Cost Management

GetReservationPurchaseRecommendation

Gets recommendations for which reservations to purchase. These recommendations could help you reduce your costs. Reservations provide a discounted hourly rate (up to 75%) compared to On-Demand pricing.

AWS generates your recommendations by identifying your On-Demand usage during a specific time period and collecting your usage into categories that are eligible for a reservation. After AWS has these categories, it simulates every combination of reservations in each category of usage to identify the best number of each type of RI to purchase to maximize your estimated savings.

For example, AWS automatically aggregates your Amazon EC2 Linux, shared tenancy, and c4 family usage in the US West (Oregon) Region and recommends that you buy size-flexible regional reservations to apply to the c4 family usage. AWS recommends the smallest size instance in an instance family. This makes it easier to purchase a size-flexible RI. AWS also shows the equal number of normalized units so that you can purchase any instance size that you want. For this example, your RI recommendation would be for c4.large because that is the smallest size instance in the c4 instance family.

Request Syntax

{ "AccountId": "string", "AccountScope": "string", "Filter": { "And": [ "Expression" ], "CostCategories": { "Key": "string", "MatchOptions": [ "string" ], "Values": [ "string" ] }, "Dimensions": { "Key": "string", "MatchOptions": [ "string" ], "Values": [ "string" ] }, "Not": "Expression", "Or": [ "Expression" ], "Tags": { "Key": "string", "MatchOptions": [ "string" ], "Values": [ "string" ] } }, "LookbackPeriodInDays": "string", "NextPageToken": "string", "PageSize": number, "PaymentOption": "string", "Service": "string", "ServiceSpecification": { "EC2Specification": { "OfferingClass": "string" } }, "TermInYears": "string" }

Request Parameters

For information about the parameters that are common to all actions, see Common Parameters.

The request accepts the following data in JSON format.

AccountId

The account ID that is associated with the recommendation.

Type: String

Length Constraints: Minimum length of 0. Maximum length of 1024.

Pattern: [\S\s]*

Required: No

AccountScope

The account scope that you want your recommendations for. Amazon Web Services calculates recommendations including the management account and member accounts if the value is set to PAYER. If the value is LINKED, recommendations are calculated for individual member accounts only.

Type: String

Valid Values: PAYER | LINKED

Required: No

Filter

Use Expression to filter by cost or by usage. There are two patterns:

  • Simple dimension values - You can set the dimension name and values for the filters that you plan to use. For example, you can filter for REGION==us-east-1 OR REGION==us-west-1. For GetRightsizingRecommendation, the Region is a full name (for example, REGION==US East (N. Virginia). The Expression example is as follows:

    { "Dimensions": { "Key": "REGION", "Values": [ "us-east-1", “us-west-1” ] } }

    The list of dimension values are OR'd together to retrieve cost or usage data. You can create Expression and DimensionValues objects using either with* methods or set* methods in multiple lines.

  • Compound dimension values with logical operations - You can use multiple Expression types and the logical operators AND/OR/NOT to create a list of one or more Expression objects. By doing this, you can filter on more advanced options. For example, you can filter on ((REGION == us-east-1 OR REGION == us-west-1) OR (TAG.Type == Type1)) AND (USAGE_TYPE != DataTransfer). The Expression for that is as follows:

    { "And": [ {"Or": [ {"Dimensions": { "Key": "REGION", "Values": [ "us-east-1", "us-west-1" ] }}, {"Tags": { "Key": "TagName", "Values": ["Value1"] } } ]}, {"Not": {"Dimensions": { "Key": "USAGE_TYPE", "Values": ["DataTransfer"] }}} ] }

    Note

    Because each Expression can have only one operator, the service returns an error if more than one is specified. The following example shows an Expression object that creates an error.

    { "And": [ ... ], "DimensionValues": { "Dimension": "USAGE_TYPE", "Values": [ "DataTransfer" ] } }

Note

For the GetRightsizingRecommendation action, a combination of OR and NOT isn't supported. OR isn't supported between different dimensions, or dimensions and tags. NOT operators aren't supported. Dimensions are also limited to LINKED_ACCOUNT, REGION, or RIGHTSIZING_TYPE.

For the GetReservationPurchaseRecommendation action, only NOT is supported. AND and OR aren't supported. Dimensions are limited to LINKED_ACCOUNT.

Type: Expression object

Required: No

LookbackPeriodInDays

The number of previous days that you want AWS to consider when it calculates your recommendations.

Type: String

Valid Values: SEVEN_DAYS | THIRTY_DAYS | SIXTY_DAYS

Required: No

NextPageToken

The pagination token that indicates the next set of results that you want to retrieve.

Type: String

Length Constraints: Minimum length of 0. Maximum length of 8192.

Pattern: [\S\s]*

Required: No

PageSize

The number of recommendations that you want returned in a single response object.

Type: Integer

Valid Range: Minimum value of 0.

Required: No

PaymentOption

The reservation purchase option that you want recommendations for.

Type: String

Valid Values: NO_UPFRONT | PARTIAL_UPFRONT | ALL_UPFRONT | LIGHT_UTILIZATION | MEDIUM_UTILIZATION | HEAVY_UTILIZATION

Required: No

Service

The specific service that you want recommendations for.

Type: String

Length Constraints: Minimum length of 0. Maximum length of 1024.

Pattern: [\S\s]*

Required: Yes

ServiceSpecification

The hardware specifications for the service instances that you want recommendations for, such as standard or convertible Amazon EC2 instances.

Type: ServiceSpecification object

Required: No

TermInYears

The reservation term that you want recommendations for.

Type: String

Valid Values: ONE_YEAR | THREE_YEARS

Required: No

Response Syntax

{ "Metadata": { "GenerationTimestamp": "string", "RecommendationId": "string" }, "NextPageToken": "string", "Recommendations": [ { "AccountScope": "string", "LookbackPeriodInDays": "string", "PaymentOption": "string", "RecommendationDetails": [ { "AccountId": "string", "AverageNormalizedUnitsUsedPerHour": "string", "AverageNumberOfInstancesUsedPerHour": "string", "AverageUtilization": "string", "CurrencyCode": "string", "EstimatedBreakEvenInMonths": "string", "EstimatedMonthlyOnDemandCost": "string", "EstimatedMonthlySavingsAmount": "string", "EstimatedMonthlySavingsPercentage": "string", "EstimatedReservationCostForLookbackPeriod": "string", "InstanceDetails": { "EC2InstanceDetails": { "AvailabilityZone": "string", "CurrentGeneration": boolean, "Family": "string", "InstanceType": "string", "Platform": "string", "Region": "string", "SizeFlexEligible": boolean, "Tenancy": "string" }, "ElastiCacheInstanceDetails": { "CurrentGeneration": boolean, "Family": "string", "NodeType": "string", "ProductDescription": "string", "Region": "string", "SizeFlexEligible": boolean }, "ESInstanceDetails": { "CurrentGeneration": boolean, "InstanceClass": "string", "InstanceSize": "string", "Region": "string", "SizeFlexEligible": boolean }, "RDSInstanceDetails": { "CurrentGeneration": boolean, "DatabaseEdition": "string", "DatabaseEngine": "string", "DeploymentOption": "string", "Family": "string", "InstanceType": "string", "LicenseModel": "string", "Region": "string", "SizeFlexEligible": boolean }, "RedshiftInstanceDetails": { "CurrentGeneration": boolean, "Family": "string", "NodeType": "string", "Region": "string", "SizeFlexEligible": boolean } }, "MaximumNormalizedUnitsUsedPerHour": "string", "MaximumNumberOfInstancesUsedPerHour": "string", "MinimumNormalizedUnitsUsedPerHour": "string", "MinimumNumberOfInstancesUsedPerHour": "string", "RecommendedNormalizedUnitsToPurchase": "string", "RecommendedNumberOfInstancesToPurchase": "string", "RecurringStandardMonthlyCost": "string", "UpfrontCost": "string" } ], "RecommendationSummary": { "CurrencyCode": "string", "TotalEstimatedMonthlySavingsAmount": "string", "TotalEstimatedMonthlySavingsPercentage": "string" }, "ServiceSpecification": { "EC2Specification": { "OfferingClass": "string" } }, "TermInYears": "string" } ] }

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.

Metadata

Information about this specific recommendation call, such as the time stamp for when Cost Explorer generated this recommendation.

Type: ReservationPurchaseRecommendationMetadata object

NextPageToken

The pagination token for the next set of retrievable results.

Type: String

Length Constraints: Minimum length of 0. Maximum length of 8192.

Pattern: [\S\s]*

Recommendations

Recommendations for reservations to purchase.

Type: Array of ReservationPurchaseRecommendation objects

Errors

For information about the errors that are common to all actions, see Common Errors.

DataUnavailableException

The requested data is unavailable.

HTTP Status Code: 400

InvalidNextTokenException

The pagination token is invalid. Try again without a pagination token.

HTTP Status Code: 400

LimitExceededException

You made too many calls in a short period of time. Try again later.

HTTP Status Code: 400

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: