Which AWS service or tool can a company use to visualize, understand, and manage AWS spending and usage over time?

Explanations:

AWS Trusted Advisor provides best practices and recommendations but does not specifically focus on visualizing and managing spending.

Amazon CloudWatch is primarily used for monitoring resources and applications, not for visualizing spending and usage.

Cost Explorer is specifically designed to help users visualize, understand, and manage AWS spending and usage over time.

AWS Budgets allows users to set and track budgets for AWS usage and costs, but it does not focus on visualization like Cost Explorer does.