Trusted Advisor
You use Trusted Advisor to visually confirm whether your account resource configurations are sound and are compliant with best practices. Trusted Advisor organizes its compliance alerts across five categories, which are described in Table 3.3.
TABLE 3.3 The Five Trusted Advisor Alert Categories
| Category | Purpose | Examples |
| Cost Optimization | Identifies any resources that are running and costing you money but are either underutilized or inactive | EC2 instances or Redshift clusters that, over time, are mostly idle |
| Performance | Identifies configuration settings that might be blocking performance improvements | Inappropriate reliance on slower magnetic or low-throughput Elastic Block Store (EBS) volumes |
| Security | Identifies any failures to use security best-practice configurations | Simple Storage Service (S3) buckets with publicly accessible permissions or security groups permitting unrestricted access |
| Fault Tolerance | Identifies any running resources that, through poor... |