Which solution will meet these requirements with the LEAST operational overhead?
Create an Auto Scaling group so that EC2 instances can scale out. Configure an S3 event notification to send events to an Amazon Simple Notification Service (Amazon SNS) topic when the upload to the S3 bucket is complete.
Create an Amazon AppFlow flow to transfer data between each SaaS source and the S3 bucket. Configure an S3 event notification to send events to an Amazon Simple Notification Service (Amazon SNS) topic when the upload to the S3 bucket is complete.
Create an Amazon EventBridge (Amazon CloudWatch Events) rule for each SaaS source to send output data. Configure the S3 bucket as the rule’s target. Create a second EventBridge (Cloud Watch Events) rule to send events when the upload to the S3 bucket is complete. Configure an Amazon Simple Notification Service (Amazon SNS) topic as the second rule’s target.
Create a Docker container to use instead of an EC2 instance. Host the containerized application on Amazon Elastic Container Service (Amazon ECS). Configure Amazon CloudWatch Container Insights to send events to an Amazon Simple Notification Service (Amazon SNS) topic when the upload to the S3 bucket is complete.
Explanations:
While creating an Auto Scaling group can help with scaling out EC2 instances for better performance, it still relies on EC2 instances, which add operational overhead. Additionally, S3 event notifications for SNS do not address the core issue of slow performance during data uploads.
Amazon AppFlow is a managed service designed for data transfer between SaaS applications and AWS services like S3, which reduces operational overhead significantly. By offloading data transfer to AppFlow, the application can focus on processing, and using S3 event notifications for SNS keeps the user notified without heavy lifting on EC2 instances.
Although Amazon EventBridge can be used to route events, creating multiple rules for each SaaS source adds complexity and operational overhead. This approach does not inherently address the performance issues related to the EC2 instances and may require more management effort than necessary.
While using Docker containers with Amazon ECS can provide some benefits, it still requires managing the container infrastructure, which introduces operational overhead. Additionally, the focus should be on reducing the load on EC2 instances rather than containerizing the application, which does not directly resolve the slow performance issue.