Which AWS service or tool will provide this information?

Explanations:

AWS Budgets is primarily used for setting custom cost and usage budgets, monitoring your AWS spending against those budgets, and receiving alerts when your spending approaches or exceeds the budgeted amount. It does not provide detailed historical cost or usage data.

Amazon Forecast is a machine learning service that provides forecasts for time series data. It does not offer cost or usage details for AWS services like EC2. Its purpose is to help businesses with demand forecasting and inventory management, rather than analyzing cloud costs.

AWS Cost Explorer is the service designed to provide historical cost and usage data for AWS resources, including Amazon EC2 instances. It allows users to view and analyze their spending patterns over time, track usage, and create custom reports based on various filters.

AWS Pricing Calculator is a tool for estimating the costs of AWS services before they are used. It helps users understand potential costs based on selected configurations and usage scenarios, but it does not provide historical cost or usage data.