I have published an InfoQ news post about AWS's slow migration to free automated best practices recommendations for AWS users:
Amazon Web Services (AWS) has recently integrated the AWS Trusted Advisor into the AWS Management Console and made four security and service limit checks available at no charge. Additional checks from the security, performance, fault tolerance and cost optimization categories remain part of their Business and Enterprise support tiers.
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Continue reading the full post in Refreshed AWS Trusted Advisor Offers Several Free Checks.