Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 78 discussion

Answer is B "Amazon DynamoDB offers two types of backups: point-in-time recovery (PITR) and on-demand backups. (==> D is not the answer) PITR is used to recover your table to any point in time in a rolling 35 day window, which is used to help customers mitigate accidental deletes or writes to their tables from bad code, malicious access, or user error. (==> A isn't the answer) On demand backups are designed for long-term archiving and retention, which is typically used to help customers meet compliance and regulatory requirements. This is the second of a series of two blog posts about using AWS Backup to set up scheduled on-demand backups for Amazon DynamoDB. Part 1 presents the steps to set up a scheduled backup for DynamoDB tables from the AWS Management Console." (==> Not the DynamoBD console and C isn't the answer either) https://aws.amazon.com/blogs/database/part-2-set-up-scheduled-backups-for-amazon-dynamodb-using-aws-backup/

The most operationally efficient solution that meets these requirements would be to use option B, which is to use AWS Backup to create backup schedules and retention policies for the table. AWS Backup is a fully managed backup service that makes it easy to centralize and automate the backup of data across AWS resources. It allows you to create backup policies and schedules to automatically back up your DynamoDB tables on a regular basis. You can also specify retention policies to ensure that your backups are retained for the required period of time. This solution is fully automated and requires minimal maintenance, making it the most operationally efficient option.

Ans B - there are no special parameters specified for the backup (eg. PITR snapshots) so it doesn't need to be elaborate

Agreed with option B is the right one. AWS backup retention goes from 1 day to 100 years (or even indefinitely, if you do not enter a retention period), so will meet the requirements.

Why is the answer not C?

https://youtu.be/g4WPLFXLwDE?si=nTWqqDcBe_Y6dtl3

Operational efficiency is always a managed service from AWS. AWS Backup is the right one in this case so B is right answer

Answer is simply B as it if MOST operationally efficient. Other options are "distractors" to confuse everyone.

https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/backuprestore_HowItWorksAWS.html

Well a 7 years TTL on the dynamoDB records could be the simpliest to answer the question, so B for the "retention policies". And since the B also propose AWS backup with a retention time at 7 years, why not.

The key advantages of using AWS Backup are: Fully managed backup service requiring minimal operational overhead Built-in scheduling, retention policies, and backup monitoring Supports point-in-time restore for DynamoDB Automated and scalable solution

B - is the answer because its easy to setup via AWS Backup & It indicates the keyword "MOST Operational Efficient". Other answers are indicating Cost efficient

AWS Backup is a fully managed backup service that simplifies the process of creating and managing backups across various AWS services, including DynamoDB. It allows you to define backup schedules and retention policies to automatically take backups and retain them for the desired duration. By using AWS Backup, you can offload the operational overhead of managing backups to the service itself, ensuring that your data is protected and retained according to the specified retention period. This solution is more efficient compared to the other options because it provides a centralized and automated backup management approach specifically designed for AWS services. It eliminates the need to manually configure and maintain backup processes, making it easier to ensure data retention compliance without significant operational effort.

A PITR is used to recover your table to any point in time in a rolling 35 day window, which is used to help customers mitigate accidental deletes or writes to their tables from bad code, malicious access, or user error. (==> A is the answer)

using AWS Backup cheaper than DynamoDB point-in-time recovery

With less overhead is AWS Backups: https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/backuprestore_HowItWorksAWS.html

To retain data for 7 years in an Amazon DynamoDB table, you can use AWS Backup to create backup schedules and retention policies for the table. You can also use DynamoDB point-in-time recovery to back up the table continuously.