Which AWS service can provide recommendations for reducing costs, increasing security, improving performance and availability?

AWS offers a service called AWS Trusted Advisor that provides recommendations in areas such as cost optimization, security, performance, and availability. Trusted Advisor analyzes your AWS environment and provides best practices and guidance based on AWS Well-Architected Framework.

To access Trusted Advisor, you can log in to the AWS Management Console, navigate to the "Support" section, and select "Trusted Advisor." There are both free and premium versions of Trusted Advisor, with the premium version providing additional checks and more detailed recommendations.