Use the Amazon Alexa Web Information Services API to
    find information about domains, including the kind of content
    that they carry, how popular are they---rank and traffic history,
    sites linking to them, among other things. See <https://aws.amazon.com/awis/>
    for more information.

Retrieve Amazon EC2 instance metadata from within the running instance.

Providing the functions for communicating with Amazon Web Services(AWS)
    Elastic Compute Cloud(EC2) and Elastic Container Service(ECS).
    The functions will have the prefix 'ecs_' or 'ec2_' depending on the class 
    of the API. The request will be sent via the REST API and the parameters are
    given by the function argument. The credentials can be set via 'aws_set_credentials'.
    The EC2 documentation can be found at <https://docs.aws.amazon.com/AWSEC2/latest/APIReference/Welcome.html>
    and ECS can be found at <https://docs.aws.amazon.com/AmazonECS/latest/APIReference/Welcome.html>.

A simple client for the Amazon Web Services ('AWS') Identity
    and Access Management ('IAM') 'API' <https://aws.amazon.com/iam/>.

Client package for the 'AWS Key Management Service' <https://aws.amazon.com/kms/>, a cloud service for managing encryption keys.

A simple client package for the Amazon Web Services ('AWS') Lambda 
    API <https://aws.amazon.com/lambda/>.

Defines the method extract and provides 'openMP' support as needed in several packages.

A client for AWS Polly <http://aws.amazon.com/documentation/polly>, a speech synthesis service.

A simple client package for the Amazon Web Services ('AWS') Simple
    Storage Service ('S3') 'REST' 'API' <https://aws.amazon.com/s3/>.

Generates version 2 and version 4 request signatures for Amazon Web Services ('AWS') <https://aws.amazon.com/> Application Programming Interfaces ('APIs') and provides a mechanism for retrieving credentials from environment variables, 'AWS' credentials files, and 'EC2' instance metadata. For use on 'EC2' instances, users will need to install the suggested package 'aws.ec2metadata' <https://cran.r-project.org/package=aws.ec2metadata>.