Answer: Cost Explorer

The correct answer is D, Cost Explorer. Cost Explorer is a service that provides cost and usage reporting and analysis, including a forecasting feature that uses historical data to project future costs and usage. This allows users to estimate and plan for future spending based on past consumption patterns. Amazon Forecast, while capable of creating forecasts based on historical data, is not specifically designed for cost management and optimization tools, including forecasting of future costs and usage of AWS resources based on past consumption. The AWS Pricing Calculator is used to estimate the costs of AWS services before deployment and does not provide ongoing cost and usage forecasting based on historical data.

Author: LeetQuiz Editorial Team