Which solution will meet these requirements MOST cost-effectively?
Migrate the data processing script to an AWS Lambda function. Use an S3 event notification to invoke the Lambda function to process the objects when the company uploads the objects.
Create an Amazon Simple Queue Service (Amazon SQS) queue. Configure Amazon S3 to send event notifications to the SQS queue. Create an EC2 Auto Scaling group with a minimum size of one instance. Update the data processing script to poll the SQS queue. Process the S3 objects that the SQS message identifies.
Migrate the data processing script to a container image. Run the data processing container on an EC2 instance. Configure the container to poll the S3 bucket for new objects and to process the resulting objects.
Migrate the data processing script to a container image that runs on Amazon Elastic Container Service (Amazon ECS) on AWS Fargate. Create an AWS Lambda function that calls the Fargate RunTaskAPI operation when the container processes the file. Use an S3 event notification to invoke the Lambda function.
Explanations:
AWS Lambda provides a serverless, scalable solution that will automatically scale based on the number of files being uploaded to the S3 bucket. By using an S3 event notification, Lambda can process files as soon as they are uploaded, reducing idle EC2 time and management overhead. This is a highly available, cost-effective solution.
While using SQS and EC2 Auto Scaling can scale based on demand, it still involves managing EC2 instances and is not as cost-effective as Lambda for this use case. The EC2 instance can remain idle or over-provisioned during off-peak times, leading to inefficiencies and higher costs.
Running a container on an EC2 instance requires manual scaling and management of the EC2 instance. This increases the management overhead and does not reduce costs compared to AWS Lambda. The idle time of the EC2 instance remains a factor.
Using ECS with Fargate and Lambda involves more complexity, management overhead, and potentially higher costs compared to Lambda alone. The additional Lambda function calling ECS introduces unnecessary complexity for a task that can be handled more simply by Lambda.
I assess that the answer is:
Migrate the data processing script to an AWS Lambda function. Use an S3 event notification to invoke the Lambda function to process the objects when the company uploads the objects.