Which AWS services can provide this information to the company?

Explanations:

AWS Auto Scaling is used to automatically adjust the number of EC2 instances based on demand, but it does not provide insights into the appropriate instance sizes or types.

AWS Control Tower helps set up and govern a multi-account AWS environment, but it does not specifically analyze instance sizes or types for optimization.

AWS Trusted Advisor provides recommendations to optimize your AWS environment, including checks for underutilized EC2 instances, helping to identify if instance sizes are appropriate.

AWS Compute Optimizer analyzes your resource usage and provides recommendations for optimal instance types and sizes based on historical performance, making it very relevant for this requirement.

Amazon Forecast is a machine learning service for time series forecasting, which does not assess or provide information about EC2 instance sizing or types.