B. Rehost the application in AWS Elastic Beanstalk with the .NET platform in a Multi-AZ deployment. E. Use AWS Database Migration Service (AWS DMS) to migrate from the Oracle database to Oracle on Amazon RDS in a Multi-AZ deployment. Rehosting the application in Elastic Beanstalk with the .NET platform can minimize development changes. Multi-AZ deployment of Elastic Beanstalk will increase the availability of application, so it meets the requirement of high availability. Using AWS Database Migration Service (DMS) to migrate the database to Amazon RDS Oracle will ensure compatibility, so the application can continue to use the same database technology, and the development team can use their existing skills. It also migrates to a managed service, which will handle the availability, so the team do not have to worry about it. Multi-AZ deployment will increase the availability of the database.

DynamoDB is NoSQL - E it out Replatform requires considerable overhead - C is out Lambda function is for running code for short duration - A is out Answer - BE

BE = least effort approach.. basically a lift and shift which is what the questions is asking for

d - incorrect at all. Doesn't exist way for migration oracle to dinamoDB.

E for minimizing development changes by using same Oracle engine but in highly available deployment. C and D require platform change so it won't work as it increases development. A is also development work of converting .Net to .Net core Lambda functions. May not even be possible. B is simple lift and shift BE is correct

Minimize development changes + High availability = AWS Elastic Beanstalk and Oracle on Amazon RDS in a Multi-AZ deployment

B) Rehost the application in AWS Elastic Beanstalk with the .NET platform in a Multi-AZ deployment. E) Use AWS Database Migration Service (AWS DMS) to migrate from the Oracle database to Oracle on Amazon RDS in a Multi-AZ deployment. The reasons are: ° Rehosting in Elastic Beanstalk allows lifting and shifting the .NET application with minimal code changes. Multi-AZ deployment provides high availability. ° Using DMS to migrate the Oracle data to RDS Oracle in Multi-AZ deployment minimizes changes for the database while achieving high availability. ° Together this "lift and shift" approach minimizes refactoring needs while providing HA on AWS.

B. This allows the company to migrate the application to AWS without significant code changes while leveraging the scalability and high availability provided by EBS's Multi-AZ deployment. E. This enables the company to migrate the Oracle database to RDS while maintaining compatibility with the existing application and leveraging the Multi-AZ deployment for high availability. A. would require significant development changes and may not provide the same level of compatibility as rehosting or replatforming options. C. would still require changes to the application and the underlying infrastructure, whereas rehosting with EBS minimizes the need for modification. D. would likely require significant changes to the application code, as DynamoDB is a NoSQL database with a different data model compared to Oracle.

Answer is BE. No idea why D was chosen. That requires development work and question clearly states minimize development changes, changing db from Oracle to DynamoDB is LOT of development.

B + E are the anwers that fulfil the requirements.

B and E

why not C?

Answer : BE

Why A is wrong?

B. Rehost the application in AWS Elastic Beanstalk with the .NET platform in a Multi-AZ deployment. E. Use AWS Database Migration Service (AWS DMS) to migrate from the Oracle database to Oracle on Amazon RDS in a Multi-AZ deployment. To minimize development changes while moving the application to AWS and to ensure a high level of availability, the company can rehost the application in AWS Elastic Beanstalk with the .NET platform in a Multi-AZ deployment. This will allow the application to run in a highly available environment without requiring any changes to the application code. The company can also use AWS Database Migration Service (AWS DMS) to migrate the Oracle database to Oracle on Amazon RDS in a Multi-AZ deployment. This will allow the company to maintain the existing database platform while still achieving a high level of availability.

B&E Option ,because D is for No-Sql

B&E Option