A company hosted a web application in an Auto Scaling group of EC2 instances. The IT manager is concerned about the over-provisioning of the resources that can cause higher operating costs. A Solutions Architect has been instructed to create a cost-effective solution without affecting the performance of the application.

Which dynamic scaling policy should be used to satisfy this requirement?

• Use simple scaling.
• Use scheduled scaling.
• Use suspend and resume scaling.
• Use target tracking scaling.
• đáp án

A financial services company plans to migrate its trading application from on-premises Microsoft Windows Server to Amazon Web Services (AWS). The solution must ensure high availability across multiple Availability Zones and offer low-latency access to block storage.

Which of the following solutions will fulfill these requirements?

• Deploy the trading application on Amazon EC2 Windows Server instances across two Availability Zones. Use Amazon FSx for Windows File Server for shared storage.
• Deploy the trading application on Amazon EC2 Windows Server instances across two Availability Zones. Use Amazon Elastic File System (Amazon EFS) to provide shared storage between the instances. Configure Amazon EFS with cross-region replication to sync data across Availability Zones.
• Configure the trading application on Amazon EC2 Windows Server instances across two Availability Zones. Use Amazon FSx for NetApp ONTAP to create a Multi-AZ file system and access the data via iSCSI protocol.
• Configure the trading application on Amazon EC2 Windows instances across two Availability Zones. Use Amazon Simple Storage Service (Amazon S3) for storage and configure cross-region replication to sync data between S3 buckets in each Availability Zone.
• đáp án

A company is using AWS Fargate to run a batch job whenever an object is uploaded to an Amazon S3 bucket. The minimum ECS task count is initially set to 1 to save on costs and should only be increased based on new objects uploaded to the S3 bucket.

Which is the most suitable option to implement with the LEAST amount of effort?

• Set up an Amazon EventBridge (Amazon CloudWatch Events) rule to detect S3 object PUT operations and set the target to a Lambda function that will run the StartTask API command.
• Set up an Amazon EventBridge (Amazon CloudWatch Events) rule to detect S3 object PUT operations and set the target to the ECS cluster to run a new ECS task.