Answer: AWS Pricing Calculator

The AWS Pricing Calculator is specifically designed to help users estimate the cost of running applications and services on AWS. It allows you to model your architecture and get detailed cost estimates based on your specific requirements, regions, and usage patterns. **Why other options are incorrect:** - **AWS CloudTrail**: This is a service for governance, compliance, and auditing that records AWS API calls and delivers log files - **AWS Well-Architected Framework**: This is a set of best practices and guidance for building secure, high-performing, resilient, and efficient infrastructure - **AWS Application Migration Service**: This service helps migrate applications to AWS but doesn't provide cost estimation capabilities

Author: Ritesh Yadav