Which AWS service or tool will provide this forecast?

Explanations:

The AWS Cost and Usage Report provides detailed information about your AWS usage and costs, but it does not offer forecasting capabilities. It is primarily used for analysis and reporting rather than prediction.

Amazon Forecast is a service for time-series forecasting but is not specifically designed for AWS resource cost forecasting. It focuses on general predictive analytics rather than directly analyzing AWS costs.

The AWS Pricing Calculator helps estimate the costs of using AWS services but does not provide historical data analysis or forecasting features. It’s a tool for planning and budgeting, not for predicting future costs based on past usage.

Cost Explorer is specifically designed to help users visualize, understand, and manage AWS costs and usage over time. It includes forecasting capabilities based on historical data, making it the correct choice for predicting future costs and usage of AWS resources.