AWS Snowball User Guide
Amazon RDS (p. 113): The DNS name of a DB instance (p. 127).
AWS CloudFormation (p. 116): The DNS name or IP address of the server that
receives an HTTP request.
endpoint port Amazon ElastiCache (p. 111): The port number used by a cache node (p. 123).
Amazon RDS (p. 113): The port number used by a DB instance (p. 127).
envelope encryption The use of a master key and a data key to algorithmically protect data. The
master key is used to encrypt and decrypt the data key and the data key is used to
encrypt and decrypt the data itself.
environment AWS Elastic Beanstalk (p. 118): A specific running instance of an
application (p. 114). The application has a CNAME and includes an application
version and a customizable configuration (which is inherited from the default
container type).
AWS CodeDeploy (CodeDeploy) (p. 116): Instances in a deployment group
in a blue/green deployment. At the start of a blue/green deployment, the
deployment group is made up of instances in the original environment. At the
end of the deployment, the deployment group is made up of instances in the
replacement environment.
environment configuration A collection of parameters and settings that define how an environment and its
associated resources behave.
ephemeral store See instance store.
epoch The date from which time is measured. For most Unix environments, the epoch is
January 1, 1970.
ETL See extract, transform, and load (ETL).
evaluation Amazon Machine Learning: The process of measuring the predictive performance
of a machine learning (ML) model.
Also a machine learning object that stores the details and result of an ML model
evaluation.
evaluation datasource The data that Amazon Machine Learning uses to evaluate the predictive accuracy
of a machine learning model.
eventual consistency The method through which AWS products achieve high availability, which involves
replicating data across multiple servers in Amazon's data centers. When data is
written or updated and Success is returned, all copies of the data are updated.
However, it takes time for the data to propagate to all storage locations. The data
will eventually be consistent, but an immediate read might not show the change.
Consistency is usually reached within seconds.
See Also data consistency, eventually consistent read, strongly consistent read.
eventually consistent read A read process that returns data from only one region and might not show the
most recent write information. However, if you repeat your read request after a
short time, the response should eventually return the latest data.
See Also data consistency, eventual consistency, strongly consistent read.
eviction The deletion by CloudFront (p. 110) of an object from an edge
location (p. 130) before its expiration time. If an object in an edge location
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