A company uses AWS Organizations and allows developers to request accounts for experimentation using their company email. The company wants to prevent developers from launching costly services or running services unnecessarily and must give each developer a fixed monthly budget. Which combination of steps will meet these requirements? (Choose three.)

To manage costs and prevent overspending, establishing a fixed monthly budget for each developer account using AWS Budgets during account creation is crucial. This sets clear financial boundaries. An SCP that denies access to costly services directly prevents developers from launching expensive resources, enforcing cost control at the organizational level. While an IAM policy could also deny access, an SCP is more effective for enforcing guardrails across multiple accounts in an AWS Organization. Finally, an AWS Budgets alert action that sends an SNS notification to invoke a Lambda function allows for automated termination of services when the budget threshold is reached, providing a programmatic way to stop runaway costs. Terminating all services automatically via a direct Budgets action is too aggressive and lacks the fine-grained control offered by a Lambda function.