Exam 3 | Notion

A startup has recently moved their monolithic web application to AWS Cloud. The application runs on a single Amazon EC2 instance. Currently, the user base is small and the startup does not want to spend effort on elaborate disaster recovery strategies or Auto Scaling Group. The application can afford a maximum downtime of 10 minutes.

In case of a failure, which of these options would you suggest as a cost-effective and automatic recovery procedure for the instance?

Configure AWS Trusted Advisor to monitor the health check of Amazon EC2 instance and provide a remedial action in case an unhealthy flag is detected

Configure an Amazon CloudWatch alarm that triggers the recovery of the Amazon EC2 instance, in case the instance fails. The instance, however, should only be configured with an Amazon EBS volume

Configure Amazon EventBridge events that can trigger the recovery of the Amazon EC2 instance, in case the instance or the application fails

Configure an Amazon CloudWatch alarm that triggers the recovery of the Amazon EC2 instance, in case the instance fails. The instance, however, should only be configured with an Amazon EBS volume

If your instance fails a system status check, you can use Amazon CloudWatch alarm actions to automatically recover it. The recover option is available for over 90% of deployed customer Amazon EC2 instances. The Amazon CloudWatch recovery option works only for system check failures, not for instance status check failures. Also, if you terminate your instance, then it can't be recovered.

You can create an Amazon CloudWatch alarm that monitors an Amazon EC2 instance and automatically recovers the instance if it becomes impaired due to an underlying hardware failure or a problem that requires AWS involvement to repair. Terminated instances cannot be recovered. A recovered instance is identical to the original instance, including the instance ID, private IP addresses, Elastic IP addresses, and all instance metadata. If the impaired instance is in a placement group, the recovered instance runs in the placement group.

The automatic recovery process attempts to recover your instance for up to three separate failures per day. Your instance may subsequently be retired if automatic recovery fails and a hardware degradation is determined to be the root cause for the original system status check failure.

Configure an Amazon CloudWatch alarm that triggers the recovery of the Amazon EC2 instance, in case the instance fails. The instance can be configured with Amazon Elastic Block Store (Amazon EBS) or with instance store volumes - The recover action is supported only on instances that have Amazon EBS volumes configured on them, instance store volumes are not supported for automatic recovery by Amazon CloudWatch alarms.

A small business has been running its IT systems on the on-premises infrastructure but the business now plans to migrate to AWS Cloud for operational efficiencies.

As a Solutions Architect, can you suggest a cost-effective serverless solution for its flagship application that has both static and dynamic content?

Host both the static and dynamic content of the web application on Amazon S3 and use Amazon CloudFront for distribution across diverse regions/countries

Host both the static and dynamic content of the web application on Amazon EC2 with Amazon RDS as database. Amazon CloudFront should be configured to distribute the content across geographically disperse regions

Host the static content on Amazon S3 and use AWS Lambda with Amazon DynamoDB for the serverless web application that handles dynamic content. Amazon CloudFront will sit in front of AWS Lambda for distribution across diverse regions

Host the static content on Amazon S3 and use Amazon EC2 with Amazon RDS for generating the dynamic content. Amazon CloudFront can be configured in front of Amazon EC2 instance, to make global distribution easy