Final answer:
A Cloud Practitioner can use AWS Cost Explorer to track AWS costs by project through filtering and cost allocation tags. AWS Cost Explorer provides detailed views of costs and usage to effectively manage cloud expenses.
Step-by-step explanation:
A Cloud Practitioner can use AWS Cost Explorer to categorize and track AWS costs by project. AWS CloudTrail is more focused on auditing and tracking user activity and API usage across your AWS infrastructure. Whereas AWS Budgets is utilized for setting cost control mechanisms, such as alerts when costs exceed certain thresholds. AWS Trusted Advisor offers recommendations to help you follow AWS best practices.
AWS Cost Explorer allows you to view and analyze your costs and usage over time. You can use its filtering capabilities to see the costs associated with individual projects by using cost allocation tags. These tags can be applied to resources to categorize and track costs on a more granular level. By tracking spending in a categorized manner, a Cloud Practitioner can effectively manage and optimize the costs associated with running different projects on AWS.