AWS Snowball User Guide
representational state
transfer
See REST.
reputation 1. An Amazon SES (p. 113) metric, based on factors that might include
bounce (p. 122)s, complaint (p. 124)s, and other metrics, regarding whether or
not a customer is sending high-quality email.
2. A measure of confidence, as judged by an internet service provider (p. 136) or
other entity that an IP address that they are receiving email from is not the source
of spam (p. 153).
requester The person (or application) that sends a request to AWS to perform a specific
action. When AWS receives a request, it first evaluates the requester's permissions
to determine whether the requester is allowed to perform the request action (if
applicable, for the requested resource (p. 148)).
Requester Pays An Amazon S3 (p. 113) feature that allows a bucket owner (p. 122) to specify
that anyone who requests access to objects in a particular bucket (p. 122) must
pay the data transfer and request costs.
reservation A collection of EC2 instance (p. 129)s started as part of the same launch
request. Not to be confused with a Reserved Instance (p. 148).
Reserved Instance A pricing option for EC2 instance (p. 129)s that discounts the on-
demand (p. 142) usage charge for instances that meet the specified parameters.
Customers pay for the entire term of the instance, regardless of how they use it.
Reserved Instance
Marketplace
An online exchange that matches sellers who have reserved capacity that they
no longer need with buyers who are looking to purchase additional capacity.
Reserved Instance (p. 148)s that you purchase from third-party sellers have less
than a full standard term remaining and can be sold at different upfront prices.
The usage or reoccurring fees remain the same as the fees set when the Reserved
Instances were originally purchased. Full standard terms for Reserved Instances
available from AWS run for one year or three years.
resource An entity that users can work with in AWS, such as an EC2 instance (p. 129), an
Amazon DynamoDB (p. 110) table, an Amazon S3 (p. 113) bucket (p. 122), an
IAM (p. 118) user, an AWS OpsWorks (p. 119) stack (p. 153), and so on.
resource property A value required when including an AWS resource (p. 148) in an AWS
CloudFormation (p. 116) stack (p. 153). Each resource may have one or more
properties associated with it. For example, an AWS::EC2::Instance resource
may have a UserData property. In an AWS CloudFormation template, resources
must declare a properties section, even if the resource has no properties.
resource record Also called resource record set. The fundamental information elements in the
Domain Name System (DNS).
See Also Domain Name System in Wikipedia.
REST Representational state transfer. A simple stateless architecture that generally runs
over HTTPS/TLS. REST emphasizes that resources have unique and hierarchical
identifiers (URIs), are represented by common media types (HTML, XML,
JSON (p. 137), and so on), and that operations on the resources are either
predefined or discoverable within the media type. In practice, this generally
results in a limited number of operations.
See Also Query, WSDL, SOAP.
RESTful web service Also known as RESTful API. A web service that follows REST (p. 148)
architectural constraints. The API operations must use HTTP methods explicitly;
expose hierarchical URIs; and transfer either XML, JSON (p. 137), or both.
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