Answer: Access usage cost-related data by using the AWS Cost Explorer API with pagination.

## Explanation **Correct Answer: A** **Why Option A is correct:** 1. **AWS Cost Explorer API** provides programmatic access to cost and usage data 2. It supports both historical data (current year) and cost forecasting (next 12 months) 3. Using the API directly minimizes operational overhead as it's a direct integration method 4. Pagination is a standard feature for handling large datasets efficiently 5. This approach allows real-time, automated data retrieval for the dashboard **Why other options are incorrect:** **Option B:** Downloadable CSV files require manual intervention to download and process, which increases operational overhead and doesn't provide true programmatic access. **Option C:** AWS Budgets with FTP requires setting up and maintaining FTP infrastructure, which adds operational overhead. AWS Budgets is primarily for budget tracking and alerts, not for comprehensive cost data retrieval. **Option D:** SMTP-based delivery via email is not programmatic access and requires manual data extraction from emails, adding significant operational overhead. **Key AWS Services:** - **AWS Cost Explorer:** Provides detailed cost analysis and forecasting capabilities - **Cost Explorer API:** Enables programmatic access to cost and usage data - **Cost Forecasting:** Built-in feature that can forecast costs for the next 12 months **Best Practice:** For programmatic access to cost data with minimal operational overhead, the Cost Explorer API is the recommended AWS service as it's designed specifically for this purpose and integrates directly with applications.

Author: LeetQuiz Editorial Team