Amazon Relational Database Service (Amazon RDS) is a managed service designed to simplify the setup, operation, and scaling of relational databases in the AWS Cloud. It automates administrative tasks such as hardware provisioning, database setup, patching, and backups. Since the company is using Microsoft SQL Server, a relational database, Amazon RDS for SQL Server is the ideal choice to migrate the database while offloading the management overhead to AWS. This allows the company to focus on its applications rather than on database administration.

A. Amazon Elastic Container Service (Amazon ECS) is a container orchestration service. It is not a managed database service and would require significant management of the database within the container.
B. Amazon SageMaker is a fully managed service for building, training, and deploying machine learning (ML) models. It is not used for hosting relational databases.
D. Amazon Athena is a serverless, interactive query service for analyzing data in Amazon S3 using standard SQL. It is not a relational database hosting service. ---

1. AWS Documentation: "What is Amazon Relational Database Service (Amazon RDS)?"

Reference: In the introduction

it states

"Amazon Relational Database Service (Amazon RDS) is a web service that makes it easier to set up

operate

and scale a relational database in the AWS Cloud. It provides cost-efficient

resizable capacity for an industry-standard relational database and manages common database administration tasks." This directly supports the use of RDS for reducing management overhead.

2. AWS Documentation: "Amazon RDS for SQL Server"

Reference: The overview page states

"Amazon RDS for SQL Server makes it easy to set up

operate

and scale SQL Server deployments in the cloud. You can deploy multiple editions of SQL Server... With Amazon RDS

you can deploy production-ready SQL Server databases in minutes." This confirms its suitability for the specific database engine mentioned.

3. AWS Documentation: "What is Amazon Elastic Container Service?"

Reference: The introduction defines Amazon ECS as "a fully managed container orchestration service that helps you easily deploy

manage

and scale containerized applications." This clarifies its purpose is for containers

not as a managed database service.

4. AWS Documentation: "What is Amazon Athena?"

Reference: The overview states

"Amazon Athena is an interactive query service that makes it easy to analyze data directly in Amazon Simple Storage Service (Amazon S3) using standard SQL." This shows it is for querying data

not hosting a transactional database.