Which AWS feature provides a no-cost platform for AWS users to join community groups, ask questions, find answers, and read community-generated articles about best practices?

Explanations:

The AWS Knowledge Center is a repository of articles, FAQs, and troubleshooting guides, but it does not provide a community platform for interaction and discussion.

AWS reis a community-driven platform where AWS users can ask questions, share answers, and access community-generated content about best practices. It is designed for community engagement and knowledge sharing.

AWS IQ is a service that connects AWS customers with AWS certified experts for project work and consulting, but it does not serve as a community forum for asking questions or finding answers.

AWS Enterprise Support is a premium support plan that offers technical support and resources but does not provide a community platform for user interaction or discussion.