What is the primary function of AWS Cost Explorer?

The primary function of AWS Cost Explorer is to visualize and manage AWS costs and usage. This tool provides users with the ability to analyze their spending and usage patterns over time, helping them to gain insights into where and how their AWS resources are being utilized. By using Cost Explorer, organizations can access detailed reports, create custom reports, and forecast future costs based on historical data. This level of analysis assists businesses in making informed decisions about their resource allocation and budgeting, ultimately leading to more efficient spending on AWS services.

The other options do not align with the core purpose of Cost Explorer. Automating software updates pertains to AWS Systems Manager or similar services rather than cost management. Cloud storage solutions refer to services like Amazon S3, while the execution of machine learning models is typically associated with services such as Amazon SageMaker. Thus, these options do not accurately represent the functionality provided by AWS Cost Explorer.