AWS Certified Solutions Architect Associate SAA-C03 Practice Question

Creating an AWS Lambda function that is triggered on a schedule is the best choice. AWS Lambda allows you to run code without provisioning or managing servers, and you are billed only for the compute time you consume, making it cost-effective for tasks that run intermittently. It seamlessly integrates with Amazon S3 and can be scheduled using AWS EventBridge (formerly CloudWatch Events). Running an Amazon EC2 instance continuously incurs unnecessary costs and additional operational overhead for management and maintenance. Using Amazon ECS with AWS Fargate reduces the need to manage servers but may not be cost-effective for short, infrequent tasks due to per-second billing with a minimum charge. Maintaining on-premises infrastructure increases operational overhead and is not relevant for minimizing costs in the AWS environment.