Answer: AWS Cost Explorer

## Explanation AWS Cost Explorer provides rightsizing recommendations that help identify cost-saving opportunities for Amazon EC2 instances. Here's why: - **AWS Cost Explorer** is specifically designed for cost analysis and optimization. It analyzes your EC2 usage patterns and provides recommendations for rightsizing instances based on actual utilization data. - **AWS Config** is primarily for compliance auditing and resource tracking, not cost optimization. - **Amazon Inspector** is a security assessment service for identifying security vulnerabilities, not cost optimization. - **Amazon Lightsail** is a simplified VPS service, not a cost analysis tool. Rightsizing recommendations in AWS Cost Explorer help you identify underutilized EC2 instances and suggest more cost-effective instance types or sizes, potentially saving up to 70% on EC2 costs by matching instance capacity to actual workload requirements.

Author: Ritesh Yadav