grunt-aws

Uses ETag caching to skip unchanged files, speeding up repeated deployments—demonstrated in the README where subsequent runs show 'No change' for unmodified files.

Offers a dry run mode for S3 and Route 53 tasks, allowing previews of changes before execution to prevent unintended modifications.

Provides extensive configuration options like Gzip compression, custom HTTP headers, and metadata settings, giving fine-tuned control over uploads as detailed in the S3 task section.

Easily plugs into existing Grunt workflows with simple installation and configuration steps, leveraging the familiar Grunt task runner paradigm as shown in the Getting Started guide.